1. College of Medicine, Princess Nourah bint Abdulrahman University, Riyadh 11671, Saudi Arabia
2. Department of Obstetrics and Gynecology, Ibn Sina National College for Medical Studies, Jeddah 22421, Saudi Arabia
3. College of Medicine, King Faisal University, Hofuf 31982, Saudi Arabia
4. Obstetrics and Gynecology Department, College of Medicine, Princess Nourah bint Abdulrahman University, Riyadh 11564, Saudi Arabia