1. Faculty of Medicine, University of Belgrade, Dr Subotića 8, 11000 Belgrade, Serbia
2. Clinic for Gynecology and Obstetrics, University Clinical Centre of Serbia, Dr Koste Todorovića 26, 11000 Belgrade, Serbia
3. Department of Obstetrics and Gynecology, Private Asya Hospital, Yenimahalle mh. 537, St. No.5 Gaziosmanpasa, 34250 Istanbul, Turkey
4. Department of Interdisciplinary Medicine (DIM), University of Bari, Aldo Moro, 70100 Bari, Italy
5. Mediliv Medical Center, Kale, Mevlevihane Cd. No.11, 55100 Samsun, Turkey
6. Department of Obstetrics and Gynecology, CERICSAL (CEntro di RIcerca Clinico SALentino), “Veris delli Ponti Hospital”, Via Giuseppina Delli Ponti, 73020 Scorrano, Italy