1. Department of Obstetrics and Gynecology, King Faisal Specialist Hospital and Research Center, Jeddah, Saudi Arabia
2. Department of Obstetrics and Gynecology, College of Medicine, Umm Al-Qura University, Makkah, Saudi Arabia
3. Department of Obstetrics and Gynecology, Prince Mohammed Bin Abdulaziz National Guard Hospital, Madinah, Saudi Arabia
4. Department of Obstetrics and Gynecology, Maternity and Children Hospital, Makkah, Saudi Arabia
5. Department of Obstetrics and Gynecology, Faculty of Medicine, Al-Azhar University, Cairo, Egypt
6. Department of Obstetrics and Gynecology, Faculty of Medicine, Al-Azhar University, Assiut, Egypt
7. Department of Obstetrics and Gynecology, Faculty of Medicine, Ain Shams University, Cairo, Egypt
8. Department of Obstetrics and Gynecology, Dudley group NHS Foundation Trust, Dudley, UK
9. Department of Obstetrics and Gynecology, New Cross Hospital, The Royal Wolverhampton NHS Trust, Wolverhampton, UK
10. Kasralainy, Faculty of Medicine, Cairo University, Cairo, Egypt
11. Department of Anesthesia and Intensive Care and Pain Management, Faculty of Medicine, Al-Azhar University, Cairo, Egypt
12. Department of Obstetrics and Gynecology, Faculty of Medicine, Fayoum University, Fayoum, Egypt