1. Department of Maternal–Fetal Medicine, İstanbul Medipol University Hospital, İstanbul, Turkey;
2. Department of Maternal–Fetal Medicine, Health Sciences University, Samsun Education and Research Hospital, Samsun, Turkey;
3. Department of Obstetrics and Gynecology, Health Sciences University, Kanuni Sultan Süleyman Education and Research Hospital, İstanbul, Turkey;
4. Department of Maternal–Fetal Medicine, Akdeniz University, Antalya, Turkey;
5. Department of Clinical Biochemistry, Eyüp State Hospital, İstanbul, Turkey