1. College of Graduate Health Sciences, University of Tennessee Health Science Center, Memphis, TN, USA
2. Department of Obstetrics and Gynecology, College of Medicine, Alfaisal University, Riyadh, Saudi Arabia
3. Department of Obstetrics and Gynecology, King Faisal Specialist Hospital and Research Centre, Jeddah, Saudi Arabia
4. Department of Obstetrics and Gynecology, King Fahad Medical City, Riyadh, Saudi Arabia
5. Department of Obstetrics and Gynecology, Maternity and Children Hospital, Alkharj, Saudi Arabia
6. Department of Obstetrics and Gynecology, King Faisal Specialist Hospital and Research Centre, Riyadh, Saudi Arabia