1. Department of Obstetrics and Gynecology, Rambam Medical Center, Haifa, Israel;
2. Department of Obstetrics and Gynecology, Hillel Yaffe Medical Center, Hadera, Israel;
3. Department of Pediatric Surgery, Assaf Harofeh Medical Center, Zerifin, Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel, Israel;
4. Department of Obstetrics and Gynecology, Harbor-UCLA Medical Center, Torrance, CA, USA