1. Obstetrics and Gynecology Department, St. Joseph University, Beirut, Lebanon
2. Department of Obstetrics and Gynecology, Hotel-Dieu de France University Hospital, Prenatal Unit, Bellevue Medical Center, Lebanon
3. Obstetrics and Gynecology Department, Rafik Hariri University Hospital, Beirut, Lebanom
4. Anesthesia Department, St. Joseph University, Hotel-Dieu de France University Hospital, Beirut, Lebanon