1. Department of Obstetrics and Gynecology, National Institute of Mother and Child Care, 400012 Bucharest, Romania
2. Department of Obstetrics and Gynecology, ‘Victor Babes’ University of Medicine and Pharmacy, 300014 Timisoara, Romania
3. Department of Obstetrics and Gynecology, ‘Carol Davila’ University of Medicine and Pharmacy, 020021 Bucharest, Romania
4. Department of Surgery, ‘Ponderas’ Academic Hospital, 021188 Bucharest, Romania