1. Department of Obstetrics and Gynecology, Erciyes Üniversitesi, Faculty of Medicine, Kayseri, Turkey;
2. Department of Radiology, Erciyes Üniversitesi, Faculty of Medicine, Pediatric Radiology Division, Kayseri, Turkey;
3. Department of Biostatistics, Faculty of Medicine, Erciyes Üniversitesi, Kayseri, Turkey