[1] Kings Coll London, Dept Women & Childrens Hlth, London, England
[2] Univ Coll London Hosp NHS Fdn Trust, Dept Obstet & Gynaecol, London, England
[3] Univ Bologna, Dept Med & Surg Sci, Bologna, Italy
[4] Univ Hosp Tours, Dept Hepatol & Gastroenterol, Tours, France
[5] Tel Aviv Univ, Sackler Sch Med, Dept Obstet & Gynecol, Sheba Med Ctr, Tel Aviv, Israel
[6] Bendigo Healthcare Grp, Bendigo, Vic, Australia
[7] Univ Hosp Zurich, Dept Obstet, Zurich, Switzerland
[8] Univ Calif San Francisco, Dept Med, San Francisco, CA 94143 USA
[9] Univ Calif San Francisco, Inst Human Genet, San Francisco, CA 94143 USA
[10] Imperial Coll London, Womens Hlth Res Ctr, London, England
[11] Chongqing Med Univ, Sch Lab Med, Chongqing, Peoples R China
[12] Ramon Sarda Mothers & Childrens Hosp, Buenos Aires, DF, Argentina
[13] Royal Flying Doctor Serv, Barton, ACT, Australia
[14] Med Univ Warsaw, Dept Gynecol Endocrinol, Warsaw, Poland
[15] Med Univ Warsaw, Dept Obstet & Gynecol 1, Warsaw, Poland
[16] Gazi Univ, Dept Anesthesiol & Reanimat, Sch Med, Ankara, Turkey
[17] Univ Adelaide, Robinson Res Inst, Adelaide, SA, Australia
[18] Sichuan Univ, West China Univ Hosp 2, Dept Obstet & Gynecol, Chengdu, Peoples R China
[19] Alto Tevere Hosp Citta di Castello, Maternal Infantile Dept, Complex Operat Unit Obstet & Gynecol, Citta Di Castello, Italy
[20] Newark Beth Israel Med Ctr, Newark, NJ USA
[21] Royal Womens Hosp, Dept Maternal Fetal Med, Parkville, Vic, Australia
[22] Univ Melbourne, Dept Obstet & Gynaecol, Melbourne, Vic, Australia
[23] Selcuk Univ, Dept Gynecol & Obstet, Konya, Turkey
[24] Selcuk Univ, Dept Internal Med, Konya, Turkey
[25] Yale Sch Med, Dept Obstet Gynecol & Reprod Sci, New Haven, CT USA
[26] Lithuanian Univ Hlth Sci, Dept Gastroenterol, Kaunas, Lithuania
[27] Erasmus MC, Univ Med Ctr Rotterdam, Dept Obstet & Gynaecol, Rotterdam, Netherlands
[28] Univ Southern Calif, Keck Sch Med, Dept Obstet & Gynecol, Los Angeles, CA 90007 USA
[29] Tongji Univ, Sch Med, Shanghai Matern & Infant Hosp 1, Shanghai, Peoples R China
[30] Univ Milano Bicocca, Dept Obstet & Gynecol, Monza, Italy
[31] Univ Salamanca, Inst Biomed Res Salamanca, Dept Physiol & Pharmacol, Ctr Invest Biomed Red Enfermedades Hepat & Digest, Salamanca, Spain
[32] Istanbul Univ, Dept Obstet & Gynecol, Istanbul, Turkey
[33] Royal Adelaide Hosp, Dept Cardiol, Adelaide, SA, Australia
[34] Mater Hlth Serv Publ Hosp, Dept Obstetr Med, Brisbane, Qld, Australia
[35] Univ Amsterdam, Amsterdam Univ Med Ctr, Dept Obstet, Amsterdam, Netherlands
[36] Izmir Bakircay Univ, Dept Obstet & Gynecol, Izmir, Turkey
[37] Australian Natl Univ, ANU Med Sch, Coll Hlth & Med, Canberra, ACT, Australia
[38] Univ Buenos Aires, Fac Farm & Bioquim, Buenos Aires, DF, Argentina
[39] Gold Coast Univ Hosp, Dept Womens & Newborn, Southport, Qld, Australia
[40] Univ Gothenburg, Dept Mol & Clin Med, Gothenburg, Sweden
[41] Univ Nottingham, Div Child Hlth Obstet & Gynaecol, Nottingham, England