1. Department of Obstetrics and Gynecology, Alessandrescu-Rusescu Institute of Mother and Child Care, Bucharest, Romania;
2. Department of Obstetrics and Gynecology, University of Medicine and Pharmacy Carol Davila, Bucharest, Romania;
3. Department of General Surgery, Floreasca Emergency Hospital, Bucharest, Romania;
4. Department of Mother and Child, Iuliu Hateganu University of Medicine and Pharmacy, Cluj-Napoca, Romania;
5. Department of Obstetrics and Gynaecology, Sheffield Teaching Hospitals, Sheffield, UK;
6. Department of Oncology and Metabolism, University of Sheffield, Sheffield, UK