Department of Obstetrics and Gynecology, King Faisal Specialist Hospital and Research Center, Jeddah, Saudi Arabia. Department of Obstetrics and Gynecology, King Faisal Specialist Hospital and Research Center, Jeddah, Saudi Arabia; Department of Obstetrics and Gynecology, College of Medicine, Umm Al-Qura University, Makkah, Saudi Arabia. Department of Obstetrics and Gynecology, King Faisal Specialist Hospital and Research Center, Jeddah, Saudi Arabia; Department of Obstetrics and Gynecology, Faculty of Medicine at Rabigh, King Abdulaziz University, Rabigh, Saudi Arabia. Department of Obstetrics and Gynecology, Maternity and Children Hospital, Alkharj, Saudi Arabia. Department of Obstetrics and Gynecology, Faculty of Medicine, Najran University, Najran, Saudi Arabia. Department of Obstetrics and Gynecology, Maternity and Children Hospital, Makkah, Saudi Arabia. Department of Obstetrics and Gynecology, College of Medicine, Alfaisal University, Riyadh, Saudi Arabia; Department Pharmacology, College of Graduate Health Sciences, University of Tennessee Health Science Center, Memphis, TN, USA. Electronic address: aabuzaid@live.com.