1. Bucur Maternity, Saint John Hospital, “University of Medicine and Pharmacy “Carol Davila”, Bucharest, Romania
2. Faculty of Medicine, Department of Medical and Surgical Specialties, “Transilvania” University of Brasov, Brasov, Romania
3. Department of Obstetrics Gynecology Clinical Emergency Hospital Sf Pantelimon Bucharest, Carol Davila University of Medicine, Bucharest, Romania