[1] Baskent Univ, Sch Med, Dept Obstet & Gynecol, Div Gynecol Oncol, TR-06100 Ankara, Turkey
[2] Cukurova Univ, Sch Med, Dept Obstet & Gynecol, Adana, Turkey
[3] Istanbul Univ, Cerrahpasa Med Sch, Dept Obstet & Gynecol, Istanbul, Turkey
[4] Ege Matern Hosp, Izmir, Turkey
[5] Hacettepe Univ, Sch Med, Dept Obstet & Gynecol, Ankara, Turkey
[6] Antalya Univ, Sch Med, Dept Obstet & Gynecol, Antalya, Turkey
[7] Erciyes Univ, Sch Med, Dept Obstet & Gynecol, Kayseri, Turkey
[8] Ankara Univ, Sch Med, Dept Obstet & Gynecol, TR-06100 Ankara, Turkey
[9] Celal Bayar Univ, Sch Med, Dept Obstet & Gynecol, Manisa, Turkey
[10] Ankara Etlik Zubeyde Hanim Matern Hosp, Ankara, Turkey
[11] Gulhane Mil Sch GATA, Dept Obstet & Gynecol, Ankara, Turkey