1. Department of Perinatology, Selcuk University Medical School, Konya, Turkey;
2. Department of Perinatology, Eskisehir City Hospital, Eskisehir, Turkey;
3. Department of Health Sciences, Istinye University, Istanbul, Turkey;
4. Department of Clinical Biochemistry, Faculty of Medicine, Yildirim Beyazit University, Ankara, Turkey;
5. Department of Clinical Biochemistry, Aralik State Hospital, Gaziantep, Turkey;
6. Department of Pathology, Etlik Zübeyde Haním Women's Health Education and Research Hospital, Ankara, Turkey;
7. Department of Perinatology, Acıbadem Acıbadem University Medical School, Istanbul, Turkey