1. Neonatology Department, Life Memorial Hospital, 031593 Bucharest, Romania
2. Faculty of Medicine, University “Titu Maiorescu”, 040441 Bucharest, Romania
3. Department for Gynecology, Obstetrics and Reproductive Medicine, Saarland University Hospital, Kirrberger Straße 100, Building 9, 66421 Homburg, Germany
4. Obstetrics–Gynecology Department, Life Memorial Hospital, 010719 Bucharest, Romania
5. Department of Obstetrics and Gynecology, Carol Davila University of Medicine and Pharmacy, 050474 Bucharest, Romania