1. King Saud Bin Abdulaziz University for Health Sciences, College of Science and Health Professions, Riyadh, Kingdom of Saudi Arabia.
2. King Abdullah International Medical Research Center, Riyadh, Kingdom of Saudi Arabia.
3. King Saud Bin Abdulaziz University for Health Sciences, College of Medicine, Riyadh, Kingdom of Saudi Arabia.
4. Department of Obstetrics and Gynecology and Department of Perinatal Medicine, University of Melbourne, Pregnancy Research Centre, Royal Women's Hospital, Parkville, Victoria, Australia.