1. Kiaris H, Koumantakis E, Ergazaki M, Sifakis S, Spandidos DA. Instability at microsatellite sequences in spontaneously aborted human embryos provides evidence for a novel mechanism for recurrent miscarriages. Oncol Rep 1995;2:805-9.
  2. Koumantakis E, Evageliou A, Sifakis S, Smbirakis N, Matalliotakis I, Relakis K, Giannakopoulou C. Comparative study of plasma carnitine determination in the neonate and in normal delivery. Clin Exp Obstet Gyn 1997;24:174-7.
  3. Sifakis S, Koumantakis E, Koffa M, Ergazaki M, Spandidos D. Detection of Herpes Simplex Virus (HSV) in Aborted Material Using the Polymerase Chain Reaction Technique. Gyn Obstet Inves 1998;45:109-15.
  4. Sifakis S, Ergazaki M, Sourvinos G, Koffa M, Koumantakis E, Spandidos D. Evaluation of Parvo B19, CMV and HPV viruses in aborted material using the polymerase chain reaction technique. Eur J Obstet Gyn Reprod Biol 1998;76:169-73.
  5. Matalliotakis I, Kiriakou D, Fragouli Y, Sifakis S, Eliopoulos G, Koumantakis E. Interleukin – 6 (IL-6) in seminal plasma of fertile and infertile men. Arch Androl 1998;41:43-50.
  6. Matalliotakis I, Sifakis S, Goumenou A, Fragouli Y, Neonaki M, Mattaliotakis G, Koumantakis E. Cytocine levels in seminal plasma. Clin Exp Obst Gyn 1998;25:58-60.
  7. Spandidos D, Koumantakis E, Sifakis S, Sourvinos G. Microsatellite mutations in spontaneously aborted embryos. Fertil Steril 1998;70:892-5
  8. Matalliotakis I, Sifakis S, Koumantaki Y, Papadopoulou E, Neonaki M, Goumenou A, Koumantakis E. Serum soluble CD23 and TNF-a in women with spontaneous first trimester abortions. Clin Exp Obstet Gyn 1999;26:118-9.
  9. Relakis K, Sifakis S, Froudarakis E, Papadopoulou E, Michalodimitrakis N, Koumantakis E, Tsatsakis A. Disposition of pesticides and toxicants in human reproductive system in cases of acute poisoning. Clin Exp Obstet Gyn 1999;26:207-10. 
  10. Sifakis S, Pharmakides G. Anemia in Pregnancy. Ann N Y Acad Sci 2000;900:125-36. 
  11. Sifakis S, Angelakis E, Vardaki E, Koumantaki Y, Matalliotakis I, Koumantakis E. Erytropoietin in the treatment of iron deficiency anemia during pregnancy. Gyn Obstet Inves 2001;51:150-6. 
  12. Koumantakis E, Matalliotakis I, Sifakis S, Kyriakou D, Neonaki M, Goumenou A, Koumantaki Y. Detection of Interleukin-6, Interleukin-8 and Interleukin-11 in serum from women with spontaneous abortion. Eur J Obstet Gyn Reprod Biol 2001;98:66-71. 
  13. Manidakis LG, Angelakis E, Sifakis S, Magou M, Stefanaki P, Manidaki A, Koumantakis E. Genital tuberculosis presenting as disseminated ovarian carcinoma with ascites and raised Ca 125 in a woman with unsuccessful IVF for primary infertility. Gyn Obstet Inves 2001;51:277-9. 
  14. Koumantakis E, Sifakis S, Koumantaki Y, Hassan E, Matalliotakis I, Papadopoulou E, Evangeliou A. Plasma carnitine levels of pregnant adolescents in labor. J Pediatr Adolesc Gynecol 2001;14:65-9.
  15. Koumantaki Y, Sifakis S, Dragatis G, Matalliotakis I, Froudarakis G, Papadopoulou E, Koumantakis E. Microsatellite analysis provides efficient confirmation of fetal trophoblast isolation from the maternal peripheral blood. Pren Diagn 2001;21:566-70. 
  16. Sifakis S, Basel D, Ianakiev P, Kilpatrick M, Tsipouras P. Distal limb malformations: underlying mechanisms and clinical associations. Clin Genet 2001;60:165-72. 
  17. Manolaraki MM, Arvanitis DA, Sourvinos G, Sifakis S, Koumantakis E, Spandidos DA. Frequent loss of heterozygosity in chromosomal region 9pter-p13 in tumor biopsies and cytological material of uterine cervical cancer. Cancer Lett 2002;176:175-81. 
  18. Sifakis S, Panayiotides IG, Angelakis E, Koumantakis G, Martavatzis N, Koumantakis E. Benign struma ovarii complicating pregnancy: A case report and review of the literature. Arch Obstet Gynecol 2003;269:72-73. 
  19. Sifakis S. Ultrasonographic markers in chromosomal abnormalities. Balkan Journal in Medical Genetics – International Journal of Medical Genetics 2003;6:31-40. 
  20. Mammas I, Zafiropoulos A, Koumantakis E, Sifakis S, Spandidos DA. Transcriptional activation of H- & N-ras oncogenes in human cervical cancer. Gynecol Oncol 2004;92:941-8. 
  21. Sifakis S, Velissariou V, Papadopoulou E, Petersen MB, Koumantakis E. Prenatal diagnosis of trisomy 2 mosaicism: A case report. Fet Diagn Ther 2004;19:488-90 
  22. Sakellaris G, Sifakis S, Hatzidaki E, Daskalojannaki M, Giannacopoulou C, Charissis G. Early exploration in perinatal torsion of the spermatic cord: a case report. J Matern Fetal Neonatal Med. 2004;15:207-9. 
  23. Antoniou M, Tzouvali H, Sifakis S, Galanakis E, Georgopoulou E, Liakou V, Giannakopoulou C, Koumantakis E, Tselentis Y. Incidence of toxoplasmosis in 5532 pregnant women in Crete, Greece: management of 185 cases at risk. Eur J Obstet Gyn Reprod Biol 2004;117:138-43. 
  24. Orfanoudaki I, Themelis G, Sifakis S, Fragouli D, Panayiotides J, Vazgiouraki E, Koumantakis E. A clinical study of optical biopsy of the uterine cervix using a multispectral imaging system. Gynecol Oncol 2005;96:119-31. 
  25. Kailas N, Sifakis S, Koumantakis E. Contraception during perimenopause. Eur J Contrac Reprod Health Care 2005;10:19-25. 
  26. Sifakis S, Angelakis E, Vardaki E, Fragouli Y, Koumantakis E. High-dose misoprostol used in outpatient management of first trimester spontaneous abortion. Arch Gynecol Obstet 2005;272:183-6.
  27. Soufla G, Sifakis S, Baritaki S, Zafiropoulos A, Koumantakis E, Spandidos DA. VEGF, FGF2, TGFB1 and TGFBR1 mRNA expression levels correlate with the malignant transformation of the uterine cervix. Cancer Letters 2005;221:105-18. 
  28. Sifakis S, Angelakis E, Orfanoudaki I, Christakis-Hampsas M, Katonis P, Makrigiannakis A, Tsatsakis A, Koumantakis E. Chemoprophylactic and bactericidal efficacy of 80-mg gentamicin in a single and once-daily dosing. Arch Gynecol Obstet 2005;272:201-6. 
  29. Rasidaki M, Sifakis S, Vardaki E, Koumantakis E. Prenatal diagnosis of a fetal chest wall cystic lymphangioma using ultrasonography and MRI: a case report with literature review. Fet Diagn Ther 2005;20:504-7. 
  30. Papadopoulou E, Sifakis S, Rogalidou M, Makrigiannakis A, Giannakopoulou C, Petersen MB. 3C syndrome with cryptorchidism and posterior embryotoxon. Clin Dysmorphol 2005;14:97-100. 
  31. Soufla G, Baritaki S, Sifakis S, Zafiropoulos A, Spandidos DA. Transcriptional inactivation of p53, Bax, Bcl-2 and Mdm2 correlates with malignant transformation of the uterine cervix. Int J Biol Markers 2005;20:18-27. 
  32. Sifakis S, Angelakis E, Papadopoulou E, Stratoudakis G, Fragouli Y, Koumantakis E. The efficacy and tolerability of iron proteinsuccinylate in the treatment of iron-deficiency anemia in pregnancy. Clin Exp Obst Gyn 2005;27:117-22. 
  33. Lydaki E, Nikoloudi I, Kaminopetros P, Bolonaki I, Sifakis S, Kikidi K, Koumantakis E, Foundouli K. Serial blood donations for intrauterine transfusions of severe hemolytic disease of the newborn with the use of recombinant erythropoietin in a pregnant woman alloimmunized with anti-Ku. Transfusion 2005;45:1791-5. 
  34. Mammas IN, Zafiropoulos A, Sifakis S, Sourvinos G, Spandidos DA. Human papillomavirus (HPV) typing in relation to ras oncogene mRNA expression in HPV-associated human squamous cervical neoplasia. Int J Biol Markers 2005;20:257-63
  35. Karadimas C, Sifakis S, Valsamopoulos P, Makatsoris C, Velissariou V, Nasioulas G, Petersen MB, Koumantakis E, Hatzaki A. Prenatal Diagnosis of Hypochondroplasia: Report of two cases. Am J Med Genet 2006;140A:998-1003. 
  36. Germanakis I, Sifakis S. The Impact of Fetal Echocardiography on the Prevalence of Liveborn Congenital Heart Disease. Pediatr Cardiol 2006;27:465-72. 
  37. Papadopoulou E, Sifakis S, Giahnakis E, Fragouli Y, Karkavitsas N, Koumantakis E, Kalmanti M. Increased human placental growth hormone at midtrimester pregnancies may be an index of intrauterine growth retardation related to preeclampsia. Growth Horm IGF Res 2006;16:290-6.
  38. Papadopoulou E, Sifakis S, Sarri C, Gyftodimou J, Liehr T, Mrasek K, Kalmanti M, Petersen MB. A report of pure 7p duplication syndrome and review of the literature. Am J Med Genet A 2006;140:2802-6.
  39. Koukoura O, Sifakis S, Stratoudakis G, Mantas N, Kaminopetros P, Koumantakis E. A case report of recurrent anencephaly and literature review. Clin Exp Obst Gyn 2006;33:185-9. 
  40. Sifakis S, Angelakis E, Avgoustinakis E, Fragouli Y, Mantas N, Koukoura O, Vardaki E, Koumantakis E. A randomized comparison between intravaginal misoprostol and prostaglandin E(2) for labor induction. Arch Gynecol Obstet 2007;275:263-7. 
  41. Antoniou M, Tzouvali H, Sifakis S, Galanakis E, Georgopoulou E, Tselentis Y. Toxoplasmosis in pregnant women in Crete. Parassitologia 2007;49:231-3 
  42. Baritaki S, Sifakis S, Huerta-Yepez S, Neonakis IK, Soufla G, Bonavida B, Spandidos DA.Overexpression of VEGF and TGF-beta1 mRNA in Pap smears correlates with progression of cervical intraepithelial neoplasia to cancer: Implication of YY1 in cervical tumorigenesis and HPV infection. Int J Oncol. 2007;31:69-79. 
  43. Mantas N, Sifakis S, Koukoura O, Avgoustinakis E, Koumantakis E. Intra-abdominal umbilical vein dilatation and term delivery: a case report and review of the literature. Fetal Diagn Ther 2007;22:431-4. 
  44. Galanakis E, Manoura A, Antoniou M, Sifakis S, Korakaki E, Hatzidaki E, Lambraki D, Tselentis Y, Giannakopolou C. Outcome of toxoplasmosis acquired during pregnancy following treatment in both pregnancy and early infancy. Fet Diagn Ther 2007;22:444-8. 
  45. Sifakis S, Mantas N, Koumantakis G, Koukoura O. Prenatal diagnosis of gallbladder duplication. Ultrasound Obstet Gynecol 2007; 30:362-3. 
  46. Koukoura O, Mantas N, Linardakis H, Hajiioannou J, Sifakis S. Successful term pregnancy in a patient with Wegener's granulomatosis: case report and literature review. Fertil Steril. 2008;89:457.e1-5. 
  47. Soufla G, Sifakis S, Spandidos DA. FGF2 transcript levels are positively correlated with EGF and IGF-1 in the malignant endometrium. Cancer Letters 2008;259:146-55. 
  48. Papadopoulou E, Sifakis S, Giahnakis E, Fragouli Y, Karkavitsas N, Koumantakis E, Kalmanti M. Human placental growth hormone is increased in maternal serum in pregnancies affected by Down syndrome. Fetal Diagn Ther 2008;23:211-6 
  49. Sifakis S, Mantas N, Konstantinidou A, Koukoura O, Augoustinakis E, Koumantakis E. A stillborn fetus with amniotic band syndrome and elevated levels of a-fetoprotein plus ß-human chorionic gonadotropin: A case report. Fetal Diagn Ther 2008;24:111-4 
  50. Konstantinidou Α, Sifakis S, Koukoura O, Mantas N, Agrogiannis G, Patsouris E. Pancreatic aplasia in a fetus with asplenia - cardiovascular defect - heterotaxy (Ivemark) syndrome. Birth Defects Research Part A: Clinical and Molecular Teratology 2008;82:601-4. 
  51. Messaritakis I, Detsika M, Koliou M, Sifakis S, Antoniou M. Prevalent genotypes of Toxoplasma gondii in pregnant women and patients from Crete and Cyprus. Am J Trop Med Hyg 2008;79:205-9.
  52. Papadopoulou E, Sifakis S, Raissaki M, Germanakis I, Kalmanti M. Antenatal and Postnatal Evidence of Periventricular Leukomalacia as a Further Indication of Vascular Disruption in Adams Oliver Syndrome. Am J Med Genet A 2008;146: 2545-50. 
  53. Sifakis S, Karkaletsi M, Christopoulou S, Donoghue J, Kaminopetros P, Konstantinidou T, Velissariou V. Distinctive pattern of first trimester maternal serum biochemical markers in trisomy 22 pregnancies. Prenat Diagn 2008;28:1174-6.
  54. Sifakis S, Koukoura O, Mantas N, Velissariou V, Koumantakis E. Hydrops fetalis, thickened placenta and other sonographic findings in a low level trisomy 21 mosaicism: a case report. Fetal Diagn Ther 2008;24:310-2 
  55. Sifakis S, Papadopoulou E, Konstantinidou A, Giahnakis E, Fragouli Y, Karkavitsas N, Koumantakis E, Kalmanti M. Increased levels of human placental growth hormone in the amniotic fluid of pregnancies affected by Down syndrome. Growth Horm IGF Res 2009;19: 121-5 
  56. Tsatsakis A, Tzatzarakis M, Koutroulakis D, Toutoudaki M, Sifakis S. Dialkyl phosphates in meconium as a biomarker of prenatal exposure to organophosphate pesticides. A study on pregnant women of rural areas in Crete, Greece. Xenobiotica 2009;39:364-73 
  57. Matalliotakis I, Cakmak H, Goumenou A, Sifakis S, Ziogos E, Arici A. ABO and Rh blood groups distribution in patients with endometriosis. Arch Gynecol Obstet, 2009;280:917-9 
  58. Konstantinidou AE, Kaminopetros P, Sifakis S, Fokaefs T, Gougoudi E, Prezerakou M, Kikidi K, Patsouris E, Nicolaides KH. Intrauterine laser photocoagulation for congenital lung malformations: late histopathologic effects of a novel therapeutic intervention. Histopathology 2009;54:904-7
  59. Christopoulou S, Christopoulou G, Hatzaki A, Hatzipouliou A, Donoghue J, Karkaletsi M, Kaminopetros P, Sifakis S, Velissariou V. The Replacement of Cytogenetic Analysis by Direct Chorionic Villi Sampling Preparation with Quantitative Fluorescence PCR. Gynecol Obstet Invest. 2009;68:255-61.
  60. Sifakis S, Zaravinos A, Maiz N, Spandidos DA, Nicolaides KH. First-trimester maternal plasma free fetal DNA and preeclampsia. Am J Obstet Gynecol, 2009;201:472.e1-7 
  61. Konstantinidou AE, Agrogiannis G, Sifakis S, Karantanas A, Harakoglou V, Kaminopetros P, Hatzaki A, Petersen MB, Karadimas C, Velissariou V, Velonis S, Papantoniou N, Antsaklis A, Patsouris E. Genetic skeletal disorders of the fetus and infant: pathologic and molecular findings in a series of 41 cases. Birth Defects Res A Clin Mol Teratol. 2009;85:811-21. 
  62. Konstantinidou AE, Fryssira H, Sifakis S, Karadimas C, Kaminopetros P, Agrogiannis G, Velonis S, Nikkels PG, Patsouris E. Cranioectodermal dysplasia: a probable ciliopathy. Am J Med Genet A. 2009;149A:2206-11.
  63. Sifakis S, Koukoura O, Konstantinidou A, Kikidi K, Prezerakou M, Kaminopetros P. Sonographic findings in severe fetomaternal transfusion and review of fetal anemia management. Arch Gynecol Obstet, 2010;281:241-5. 
  64. Sifakis S, Soufla G, Koukoura O, Soulitzis N, Koutroulakis D, Maiz N, Konstantinidou A, Melissari E, Spandidos DA. Decreased Annexin A5 mRNA placental expression in pregnancies complicated by fetal growth restriction. Thromb Res 2010;125:326-31 
  65. Sifakis S, Staboulidou I, Maiz N, Velissariou V, Nicolaides KH. Outcome of pregnancies with trisomy 2 cells in chorionic villi. Prenat Diagn 2010;30:329-32 
  66. Sifakis S, Akolekar R, Syngelaki A, De Cruz J, Nicolaides KH. Maternal serum human placental growth hormone (hPGH) at 11-13 weeks in trisomy 21 and trisomy 18 pregnancies. Prenat Diagn 2010;30:212-5
  67. Kitsiou-Tzeli S, Petridou ET, Karagkiouzis T, Dessypris N, Makrithanasis P, Sifakis S, Kanavakis E. Knowledge and attitudes towards prenatal diagnostic procedures among pregnant women in Greece. Fetal Diagn Ther 2010;27:149-55 
  68. Sifakis S, Ghatpande S, Seppo A, Kilpatrick MW, Tafas T, Tsipouras P, Fejgin M, Amiel A. Prenatal diagnosis of trisomy 21 through detection of trophoblasts in cervical smears. Early Hum Dev 2010;86:311-3 
  69. Vrachnis N, Vitoratos N, Iliodromiti Z, Sifakis S, Deligeoroglou E, Creatsas G. Intrauterine inflammation and preterm delivery. Ann N Y Acad Sci 2010;1205:118-22 
  70. Sifakis S, Akolekar R, Kappou D, Mantas N, Nicolaides KH. Maternal serum insulin like growth factor-I (IGF-I) at 11-13 weeks in preeclampsia. Prenat Diagn 2010;30:1026-31 
  71. Gourvas V, Sifakis S, Dalpa E, Soulitzis N, Koukoura O, Spandidos DA. Reduced placental PHD-3 expression in pregnancies with fetal growth restriction. BJOG 2010;117:1635-42 
  72. Sifakis S, Akolekar R, Mantas N, Kappou D, Nicolaides KH. Maternal serum Human Placental Growth Hormone (hPGH) at 11 to 13 weeks of gestation in preeclampsia. Hypertens Pregnancy 2011;30:74-82 
  73. Koukoura O, Sifakis S, Zaravinos A, Apostolidou S, Jones A, Hajiioannou J, Widschwendter M, Spandidos DA. Hypomethylation along with increased H19 expression in placentas from pregnancies complicated with fetal growth restriction. Placenta 2011;32:51-7 
  74. Stathaki M, Papadopoulou E, Koukouraki S, Sifakis S, Papadaki E, Kalmanti M, Karkavitsas N. Pelvic hypoplastic kidney in a patient with Williams-Beuren syndrome. Hell J Nucl Med 2011;14:160-2. 
  75. Sifakis S, Koukoura O, Mantas N, Papadopoulou E, Grigoriadou M, Hajiioannou J, Vlahakis G, Petersen MB. Antenatal diagnosis of duodenal atresia in dizygotic twins associated with congenital hearing impairment. J Matern Fetal Neonatal Med 2011;24:871-2 
  76. Koutsaki M, Sifakis S, Zaravinos A, Koutroulakis D, Koukoura O, Spandidos DA. Decreased placental expression of hPGH, IGF-I and IGFBP-1 in pregnancies complicated by fetal growth restriction. Growth Horm IGF Res 2011;21:31-6 
  77. Papadopoulou E, Sifakis S, Sol-Church K, Klein-Zighelboim E, Stabley DL, Raissaki M, Gripp KW, Kalmanti M. CNS Imaging is a Key Diagnostic Tool in the Evaluation of Patients with CFC Syndrome: Two Cases and Literature Review. Am J Med Genet Part A 2011;155:605-11 
  78. Sifakis S, Akolekar R, Kappou D, Mantas N, Nicolaides KH. Maternal serum insulin-like growth factor binding protein-1 (IGFBP-1) at 11-13 weeks in preeclampsia. Prenat Diagn 2011;31:196-201. 
  79. Xanthopoulou AG, Anagnostopoulos AK, Vougas K, Anastasiadou E, Sifakis S, Siafaka-Kapadai A , Tsangaris GTh. The Proteome of normal Human Chorionic Villus Sampling Cells. In Vivo 2011;25:945-61.
  80. Sifakis S, Akolekar R, Kappou D, Mantas N, Nicolaides KH. Maternal serum insulin-like growth factor binding protein-3 (IGFBP-3) at 11-13 weeks in preeclampsia. J Hum Hypertension 2012;26:253-8
  81. Manolakos E, Vetro A, Kefalas K, Rapti SM, Thomaidis L, Aperis G, Sotiriou S, Kitsos G, Tsoplou P, Sifakis S, Merkas M, Liehr T, Zuffardi O. Deletion 2q31.2-q31.3 in a 4 Years Old Girl With Microcephaly and Severe Mental Retardation. Am J Med Genet Part A 2011 155:1476-82. 
  82. Sifakis S, Akolekar R, Kappou D, Mantas N, Nicolaides KH. Maternal serum IGF-I, IGFBP-1 and IGFBP-3 at 11-13 weeks in trisomy 21 and trisomy 18 pregnancies. Eur J Obstet Gyn Reprod Biol 2011;157:166-8. 
  83. Hatzaki A, Sifakis S, Apostolopoulou A, Bouzarelou D, Konstantinidou A, Kappou D, Sideris A, Tzortzis E, Athanassiadis A, Florentin L, Theodoropoulos P, Makatsoris C, Karadimas C, Velissariou V. FGFR-3 Related Skeletal Dysplasias Diagnosed Prenatally by Ultrasonography and Molecular Analysis: Presentation of 17 Cases. Am J Med Genet Part A 2011;155:2426–35. 
  84. Orfanoudaki IM, Kappou D, Sifakis S. Recent advances in optical imaging for cervical cancer detection. Arch Gynecol Obstet 2011;284:1197-208. 
  85. Koukoura O, Sifakis S, Zaravinos A, Apostolidou S, Soufla G, Jones A, Widschwendter M, Spandidos DA. Aberrant methylation of IGF2 is associated with loss of imprinting in placentas from pregnancies complicated with fetal growth restriction. Int J Mol Med 2011;28:481-7 
  86. Germanakis I, Pepes S, Sifakis S, Gardiner HM. Fetal longitudinal myocardial function assessment by anatomic M Mode. Fetal Diagn Ther 2012;32:65-71 
  87. Vrachnis N, Malamas FM, Sifakis S, Tsikouras P, Iliodromiti Z. Myometrial actions of progesterone and CRH in labor. Clin Dev Immunol 2012;2012:937618. 
  88. Sifakis S, Anagnostopoulou K, Plastira K, Vrachnis N, Konstantinidou A, Sklavounou E. A Rare Case of XX/XY Mosaicism and Trisomy 13 in Early Prenatal Diagnosis. Birth Defects Res A Clin Mol Teratol 2012;94:245-8 
  89. Sifakis S, Akolekar R, Kappou D, Mantas N, Nicolaides KH. Maternal serum insulin like growth factor (IGF-I) and binding proteins IGFBP-1 and IGFBP-3 at 11-13 weeks’ gestation in pregnancies delivering small for gestational age neonates. Eur J Obstet Gynecol & RB 2012;161:30-3 
  90. Vrachnis N, Malamas FM, Sifakis S, Deligeoroglou E, Iliodromiti Z. The oxytocin-oxytocin receptor system and its antagonists as tocolytic agents. Int J Endocrinol 2011;2011:350546. 
  91. Manolakos E, Sifakis S, Sotiriou S, Papoulidis I, Peitsidis P, Eleftheriades M, Mersinias V, Liehr T, Kitsiou-Tzeli S, Petersen MB, Orru S. Prenatal detection of an inverted duplication deletion in the long arm of chromosome 1 in a fetus with increased nuchal translucency. Molecular cytogenetic analysis and review of the literature. Clin Dysmorphol 2012;21:101-105 
  92. Sifakis S, Papantoniou N, Kappou D, Antsaklis A. Non invasive prenatal diagnosis of Down syndrome: current knowledge and novel insights. J Perinat Med 2012;40:319-27 
  93. Vrachnis N, Augoulea A, Iliodromiti Z, Lambrinoudaki I, Sifakis S, Creatsas G. Previous gestational diabetes mellitus and cardiovascular vulnerability: more than an association. Int J Endocrinol 2012;2012:458610 
  94. Kalampokas E, Vrachnis N, Samoli E, Rizos D, Iliodromiti Z, Sifakis S, Kalampokas T, Vitoratos N, Creatsas G, Botsis D. Association of amniotic fluid adiponectin and Placental Growth Factor with second trimester fetal growth. In Vivo 2012;26:327-33. 
  95. Koukoura O, Sifakis S, Spandidos DA. DNA methylation in the human placenta and fetal growth. Mol Med Report 2012;5:883-889. 
  96. Vrachnis N, Belitsos P, Sifakis S, Dafopoulos K, Kassanos D, Siristatidis C, Iliodromiti Z. Role of adipokines and other inflammatory mediators in previous gestational diabetes mellitus. Int J Endocrinol 2012;2012:549748 
  97. Sifakis S, Akolekar R, Kappou D, Mantas N, Nicolaides KH. Maternal serum placental growth hormone at 11-13 weeks' gestation in pregnancies delivering small for gestational age neonates. J Matern Fetal Neonatal Med 2012 25:1796-9. 
  98. Sifakis S, Manolakos E, Vetro A, Kappou D, Peitsidis P, Kontodiou M, Garas A, Vrachnis N, Konstandinidou A, Zuffardi O, Orru S, Papoulidis I. Prenatal diagnosis of Wolf-Hirschhorn syndrome confirmed by Comparative Genomic Hybridization array: report of two cases and review of the literature. Mol Cytogenet 2012;5:12 
  99. Vakonaki E, Soulitzis N, Sifakis S, Papadogianni D, Koutroulakis D, Spandios DA. Overexpression and ratio disruption of ΔNp63 and TAp63 isoform equilibrium in endometrial adenocarcinoma: correlation with obesity, menopause, and grade I/II tumors. J Cancer Res Clin Oncol 2012;138:1271-8. 
  100. Kitsiou-Tzeli S, Konstantinidou A, Sofocleous C, Kosma K, Syrmou A, Giannikou K, Sifakis S, Makrythanasis P, Tzetis M. Familial Pelizaeus–Merzbacher disease caused by a 320.6Kb Xq22.2 duplication and the pathological findings of a male fetus. Birth Defects Res A Clin Mol Teratol 2012;94:494-8 
  101. Deligeoroglou E, Vrachnis N, Athanasopoulos N, Iliodromiti Z, Sifakis S, Iliodromiti S, Creatsas G. Mediators of chronic inflammation in polycystic ovarian syndrome. Gynecol Endocrinol 2012;28:974-8. 
  102. Papoulidis I, Siomou E, Sotiriadis A, Efstathiou G, Psara A, Sevastopoulou E, Anastasakis E, Sifakis S, Tsilligianni T, Kontodiou M, Malamaki C, Tzimina M, Manolakos E, Petersen MB, Athanasiadis A. Dual testing with QF-PCR and karyotype analysis for prenatal diagnosis of chromosomal abnormalities. Evaluation of 13,500 cases with consideration of using QF-PCR as stand-alone test according to referral indications. Prenat Diagn 2012;32:680-5 
  103. Vrachnis N, Karavolos S, Iliodromiti Z, Sifakis S, Mastorakos G, Creatsas G. Impact of mediators present in amniotic fluid on preterm labour. In Vivo 2012;26:799-812. 
  104. Sifakis S, Kaminopetros P, Kappou D, Dimitriadis T. Successful term pregnancy in a patient with cervicovaginal fistula managed with transabdominal laparoscopic cervical cerclage. J Obstet Gynaecol 2012;32:700-1 
  105. Vrachnis N, Sifakis S, Samoli E, Kappou D, Pavlakis K, Iliodromiti Z, Botsis D. Three-Dimensional Ultrasound and Three-Dimensional Power Doppler improve the preoperative evaluation of complex benign ovarian lesions. Clin Exp Obstet Gynecol 2012;39:474-8 
  106. Gourvas V, Dalpa E, Konstantinidou A, Vrachnis N, Spandidos DA, Sifakis S. Angiogenic factors in placentas from pregnancies complicated by fetal growth restriction. Mol Med Report 2012;6:23-27 
  107. Papantoniou N, Sifakis S, Antsaklis A. Therapeutic management of fetal anemia: review of standard practice and alternative treatment options. J Perinat Med 2013;41:71-82 
  108. Surichan S, Androutsopoulos VP, Sifakis S, Koutala E, Tsatsakis A, J Arroo RR, Boarder MR. Bioactivation of the citrus flavonoid nobiletin by CYP1 enzymes in MCF7 breast adenocarcinoma cells. Food Chem Toxicol 2012;50:3320-8 
  109. Biron-Shental T, Fejgin MD, Sifakis S, Liberman M, Antsaklis A, Amiel A. Endoreduplication in Cervical Trophoblast Cells from Normal Pregnancies. J Matern Fetal Neonat Med 2012;25:2625-8. 
  110. Iliodromiti Z, Antonakopoulos N, Sifakis S, Tsikouras P, Daniilidis A, Botsis D, Vrachnis N. Endocrine, paracrine and autocrine placental mediators in labor. Hormones 2012;11:397-409. 
  111. Soufla G, Sifakis S, Porichis F, Spandidos DA. Prognostic value of TGFB1 protein in endometrioid adenocarcinoma. Eur J Clin Inves 2013;43:79-90. 
  112. Vrachnis N, Kalampokas E, Sifakis S, Vitoratos N, Kalampokas T, Botsis D, Iliodromiti Z. Placental Growth Factor (PlGF): a key to optimizing fetal growth. J Matern Fetal Neonatal Med 2013;26:995-1002.
  113. Stamatelou F, Deligeoroglou E, Vrachnis N, Iliodromiti S, Iliodromiti Z, Sifakis S, Farmakides G, Creatsas G. Corticotrophin releasing hormone and progesterone plasma levels association with the onset and progression of labor. Clin Exp Obstet Gynecol 2013;40:568-71 
  114. Manolakos M, Vetro A, Papadopoulou E, Kefalas K, Lagou M, Thomaidis L, Peitsidis P, Sifakis S, Divane A, Ziegler M, Liehr T, Zuffardi O, Papoulidis I. Partial Trisomy 2p and Partial Monosomy 2q Arising from a Paternal Intrachromosomal 2q-into-2p Between-Arm Insertion and Paracentric Inversion: Molecular Cytogenetic Characterization of a Four Break Rearrangement. Cytogenet Genome Res 2013;140:12-20. 
  115. Iliodromiti Z, Zygouris D, Sifakis S, Pappa K, Tsikouras P, Salakos N, Daniilidis A, Siristatidis C, Vrachnis N. Acute lung injury in preterm fetuses and neonates: mechanisms and molecular pathways. J Matern Fetal Neonat Med 2013;26:1696-704. 
  116. Sifakis S, Eleftheriades M, Kappou D, Murru R, Konstantinidou A, Sandro Orru S, Ziegler M, Liehr T, Manolakos E, Papoulidis I. Prenatal diagnosis of proximal partial trisomy 1q confirmed by Comparative Genomic Hybridization array: molecular cytogenetic analysis, fetal pathology and review of the literature. Birth Defects Res A Clin Mol Teratol 2014;100:284-93 
  117. Gourvas V, Soulitzis N, Konstantinidou A, Dalpa E, Koukoura O, Koutroulakis D, Spandidos DA, Sifakis S. Reduced ANXA5 mRNA and protein expression in pregnancies complicated by preeclampsia. Thromb Res 2014;133:495-500. 
  118. Koutroulakis D, Sifakis S, Tzatzarakis NM, Alegakis HA, Theodoropoulou E, Kavvalakis M, Kappou D, Tsatsakis MA. Dialkyl phosphates in amniotic fluid as a biomarker of fetal exposure to organophosphates in Crete, Greece; association with fetal growth. Reprod Toxicol 2014;46C:98-105
  119. Agrogiannis GD, Sifakis S, Efstratios Patsouris ES, Konstantinidou AE.The Insulin-like growth factors (IGFs) in embryonic and fetal growth and skeletal development. Mol Med Rep 2014;10:579-84
  120. Koukoura O, Spandidos DA, Daponte A, Sifakis S. DNA methylation profiles in ovarian cancer: Implication in diagnosis and therapy (Review). Mol Med Rep 2014;10:3-9. 
  121. Spyrou I, Sifakis S, Ploumidis A, Papalampros A, Felekouras E, Tsatsakis AM, Spandidos DA, Androutsopoulos V. Expression profile of CYP1A1 and CYP1B1 enzymes in endometrial and breast tumors. Tumour Biol 2014;35:9549-56
  122. Kappou D, Sifakis S, Androutsopoulos V, Konstantinidou A, Spandidos DA, Papantoniou N. Placental mRNA expression of angiopoietins (Ang)-1, Ang-2 and their receptor Tie-2 is altered in pregnancies complicated by preeclampsia. Placenta 2014;35:718-23 
  123. Sifakis S, Koukou Z, Spandidos DA. Cell-free fetal DNA and pregnancy-related complications (Review). Mol Med Rep 2015;11:2367-2372 
  124. Karagkiouzis T, Sifakis S, Makrithanasis P, Dessypris N, Petridou ET, Kitsiou-Tzeli S, Kanavakis E. Awareness of Prenatal Screening for Fetal Aneuploidy Among Pregnant Women in Greece. In Vivo 2015;29:155-160. 
  125. Kappou D, Sifakis S, Konstantinidou A, Papantoniou N, Spandidos DA. Role of the angiopoietin/Tie system in pregnancy (Review). Exp Ther Med 2015:9:1091-1096 
  126. Fragkiadaki P, Soulitzis N, Sifakis S, Koutroulakis D, Gourvas V, Vrachnis N, Spandidos DA. Downregulation of Notch signaling pathway in late preterm and term placentas from pregnancies complicated by preeclampsia. Plos One 2015;10:e0126163 
  127. Vrachnis N, Iavazzo C, Iliodromiti Z, Sifakis S, Alexandrou A, Siristatidis C, Grigoriadis C, Botsis D, Creatsas G. Diabetes mellitus and gynecologic cancer: molecular mechanisms, epidemiological, clinical and prognostic perspectives. Arch Gynecol Obstet 2016;293:239-46
  128. Papoulidis Ι, Paspaliaris V, Siomou E, Orru S, Murru R, Sifakis S, Nikolaidis P, Garas A, Sotiriou S, Thomaidis L, Manolakos E. Interstitial deletion at 11q14.2-11q22.1 may cause severe learning difficulties, mental retardation and mild heart defects in 13-year old male. Mol Cytogen 2015;8:71 
  129. Pontikaki A, Sifakis S, Spandidos DA. Endometriosis and breast cancer: A survey of the epidemiological studies. Oncol Lett 2016 Jan;11:23-30. 
  130. Koukoura O, Sifakis S, Spandidos DA. DNA methylation in endometriosis. Mol Med Rep. 2016;13(4):2939-48
  131. Katsikantami I, Sifakis S, Tzatzarakis MN, Vakonaki E, Kalantzi OI, Tsatsakis AM, Rizos AK. A global assessment of phthalates burden and related links to health effects. Environ Int 2016;97:212-36
  132. Papadopoulou  Ζ, Papoulidis Ι, Sifakis S, Markopoulos G, Vetro V, Vlaikou AM, Ziegler M, Liehr T, Thomaidis L, Zuffardi O, Syrrou M, George G, Manolakos E. Partial monosomy 8p and trisomy 16q in two children with developmental delay detected with aCGH. Mol Med Rep 2017;16:8808-8818.
  133. Kolialexi A, Tsangaris GT, Sifakis S, Gourgiotis D, Katsafadou A, Lykoudi A, Marmarinos A, Mavreli D, Pergialiotis V, Fexi D, Mavrou A, Papaioanou GK, Papantoniou N. Plasma biomarkers for the identification of women at risk for early-onset preeclampsia. Expert Rev Proteomics 2017;14(3):269-276. 
  134. Sifakis S, Androutsopoulos VP, Tsatsakis AM, Spandidos DA. Human exposure to endocrine disrupting chemicals: effects on the male and female reproductive systems. Environ Toxicol Pharmacol 2017;51:56-70.
  135. Velegrakis Α, Sfakiotaki Μ, Sifakis S. Human placental growth hormone in normal and abnormal fetal growth (Review). Biomed Rep 2017;7:115-122
  136. Petrakis D, Vassilopoulou L, Mamoulakis C, Psycharakis C, Anifantaki A, Sifakis S, Docea AO, Tsiaoussis J, Makrigiannakis A, Tsatsakis AM. Endocrine Disruptors Leading to Obesity and Related Diseases. Int J Environ Res Public Health. 2017 Oct 24;14(10). 
  137. Sifakis S, Androutsopoulos V, Pontikaki A, Velegrakis A, Papaioannou G, Koukoura O, Spandidos DA, Papantoniou N. Placental expression of PAPPA, PAPPA-2 and PLAC-1 in pregnacies is associated with FGR. Mol Med Rep 2018; 17: 6435-6440
  138. Karzi V, Tzatzarakis MN, Vakonaki E, Alegakis T, Katsikantami I, Sifakis S, Rizos A, Tsatsakis AM. Biomonitoring of bisphenol A, triclosan and perfluorooctanoic acid in hair samples of children and adults. J Appl Toxicol 2018;38:1144-1152
  139. Calina D, Docea AO, Golokhvast KS, Sifakis S, Tsatsakis A, Makrigiannakis A. Management of Endocrinopathies in Pregnancy: A Review of Current Evidence. Int J Environ Res Public Health. 2019;16. pii: E781. doi: 10.3390/ijerph16050781. Review. 
  140. Karzi V, Tzatzarakis M, Katsikantami I, Stavroulaki A, Alegakis A, Vakonaki E, Xezonaki P, Sifakis S, Rizos A, Tsatsakis A. Investigating exposure to endocrine disruptors via hair analysis of pregnant women. Environ Res. 2019 Nov;178:108692. doi: 10.1016/j.envres.2019.108692. Epub 2019 Aug 26. 
  141. Barmpas M, Vakonaki E, Tzatzarakis M, Sifakis S, Alegakis A, Grigoriadis T, Sodré DB, Daskalakis G, Antsaklis A, Tsatsakis A. Organochlorine pollutants' levels in hair, amniotic fluid and serum samples of pregnant women in Greece. A cohort study. Environ Toxicol Pharmacol. 2020;73:103279 
  142. Katsikantami I, Tzatzarakis MN, Karzi V, Stavroulaki A, Xezonaki P, Vakonaki E, Alegakis AK, Sifakis S, Rizos AK, Tsatsakis AM. Biomonitoring of bisphenols A and S and phthalate metabolites in hair from pregnant women in Crete. Sci Total Environ. 2020;712:135651 
  143. Katsikantami I, Tzatzarakis MN, Alegakis AK, Karzi V, Hatzidaki E, Stavroulaki A, Vakonaki E, Xezonaki P, Sifakis S, Rizos AK, Tsatsakis AM. Phthalate metabolites concentrations in amniotic fluid and maternal urine: Cumulative exposure and risk assessment. Toxicol Rep. 2020;7:529-538
  144. Karzi V, Tzatzarakis MN, Hatzidaki E, Katsikantami I, Alegakis AK, Stavroulaki A, Vakonaki E, Kalogeraki A, Kouvidi E, Xezonaki P, Sifakis S, Rizos AK. Determination of prenatal exposure to parabens and triclosan and estimation of maternal and fetal burden. Toxicol Rep. 2021;8:808-815. 
  145. Kalmantis K , Karagiannopoulos A, Sifakis S. Neurofibromatosis type-1 and pregnancy: a review. Obstetric and Gynecological Imaging 2021;1(1):21-30
  146. Peitsidis P, Vrachnis N, Sifakis S, Katsetos C, Tsikouras P, Antonakopoulos N, Alexopoulos E, Kalmantis K. Improving tissue characterization, differentiation and diagnosis in gynecology with the narrowband imaging technique: A systematic review. Exp Ther Med 2022;23(1): 36