[1] Zonguldak Matern & Child Hlth Hosp, Dept Gynecol Oncol, Tepebasi St, TR-67030 Zonguldak, Turkey
[2] Zonguldak Bulent Ecevit Univ, Fac Med, Dept Gynecol & Obstet, TR-67000 Kozlu, Zonguldak, Turkey
[3] Kocaeli Univ, Fac Med, Dept Biostat & Med Informat, Umuttepe Campus, TR-41380 Kocaeli, Turkey