1. Department of Obstetrics and Gynecology, Kaplan Hospital, Rehovot, Israel
2. Laboratory of Teratology and Experimental Oncology, Koret School of Veterinary Medicine, Hebrew University of Jerusalem, Rehovot, Israel
3. Department of Pathology, Kaplan Hospital, Rehovot, Israel
4. Department of Obstetrics and Gynecology, Asaf Harofe Hospital, Tserifin, Israel