1. Department of Obstetrics and Gynecology, King Faisal Specialist Hospital and Research Center, Jeddah, Saudi Arabia
2. Department of Obstetrics and Gynecology, Faculty of Medicine, Umm Al-Qura University, Makkah, Saudi Arabia
3. Department of Obstetrics and Gynecology, Faculty of Medicine, King Saud University, Riyadh, Saudi Arabia
4. Department of Obstetrics and Gynecology, Faculty of Medicine, Fayoum University, Fayoum, Egypt
5. Kasralainy, Faculty of Medicine, Cairo University, Cairo, Egypt
6. Department of Obstetrics and Gynecology, Faculty of Medicine, Ain Shams University, Cairo, Egypt