1. Department of Obstetrics and Gynaecology, School of Medicine, Abant Izzet Baysal University, Golkoy Kampusu, Golkoy Yerleskesi, Bolu, Turkey;
2. Department of Medical Pathology, School of Medicine, Duzce University, Merkez Yerleskesi, Konuralp, Duzce, Turkey;
3. Department of Paediatrics, School of Medicine, Abant Izzet Baysal University, Golkoy Kampusu, Golkoy Yerleskesi, Bolu, Turkey;
4. Department of Obstetrics and Gynaecology, School of Medicine, Gaziosmanpasa University, Sevki Erek Yerleskesi, Tokat, Turkey