Lena Sagi-Dain1,2, Inna Kreinin-Bleicher3, Rabia Bahous3, Shlomi Sagi4,3. 1. Department of Obstetrics and Gynecology, Carmel Medical Center, 7 Michal St., Haifa, Israel. lena2303@gmail.com. 2. Ruth and Bruce Rappaport Faculty of Medicine, Technion - Israel Institute of Technology, Haifa, Israel. lena2303@gmail.com. 3. Department of Obstetrics and Gynecology, Bnai-Zion Medical Center, Haifa, Israel. 4. Ruth and Bruce Rappaport Faculty of Medicine, Technion - Israel Institute of Technology, Haifa, Israel.