1. Obstetrics and Gynecology Department, Hadassah Mount Scopus Medical Center , Jerusalem, PC 9851328 , Israel
2. Faculty of Medicine, Hadassah-Hebrew University , Jerusalem, PC 9112102 , Israel
3. Braun School of Public Health and Community Medicine, Hadassah Medical Center, Faculty of Medicine, Hebrew University of Jerusalem , Jerusalem, PC 9112102 , Israel
4. Department of Obstetrics and Gynecology, Rabin Medical Center, Sackler School of Medicine, Tel-Aviv University , Tel Aviv, PC 4941492 , Israel