1. Department of Obstetrics and Gynecology, King Khaled University Hospital, College of Medicine and King Saud Medical University, Riyadh, Saudi Arabia
2. Department of Obstetrics and Gynecology, Security Forces Hospital, Riyadh, Saudi Arabia
3. Department of Obstetrics and Gynecology, King Abdulaziz University, Jeddah, Saudi Arabia
4. Department of Obstetrics and Gynecology, King Faisal Specialist Hospital and Research Centre, Jeddah, Saudi Arabia
5. Department of Gynecologic Oncology, King Fahad Medical City, Riyadh, Saudi Arabia
6. Associate Professor, Al Faisal University, Department of Obstetrics and Gynecology, King Faisal Specialist Hospital and Research Centre, Riyadh, Saudi Arabia
7. Department of Pathology and Laboratory Medicine, King Abdulaziz Medical City, Riyadh, Saudi Arabia
8. Department of Nursing, Security Forces Hospital Program, Riyadh, Saudi Arabia
9. Department of Medicine and Clinical Epidemiology and Biostatistics, McMaster University, Hamilton, Ontario, Canada
10. Department of Medicine and Clinical Epidemiology and Biostatistics, McMaster University, Hamilton, Ontario, Canada/Department of Medicine and Biomedical and Health Informatics, University of Missouri, Kansas City, Missouri
11. Department of Medicine and Clinical Epidemiology and Biostatistics, McMaster University, Hamilton, Ontario, Canada/Faculty of Dentistry, Universidad de Chile, Santiago de Chile, Chile