1. Bruce Rappaport School of Medicine, Technion, Haifa, Israel; Department of Obstetncs and Gynecology, Western Galilee Hospital, PO Box 21, Nahanya 22100, Israel;
2. Department of Obstetncs and Gynecology, Eliachar Research Laboratory, Western Galilee Hospital, Nahanya; Bruce Rappaport School of Medicine, Technion, Haifa, Israel