1. Professor, Department of Medical Biochemistry, College of Medicine, and King Khalid University Hospital, King Saud University, P.O. Box 2925, Riyadh 11461, Saudi Arabia
2. Associate Professor, Department of Obstetrics and Gynecology, King Saud University, and Counsel and Supervisor of Executive Management and The Chief Executive Director, King Faisal Specialist Hospital and Research Centre, Riyadh, Saudi Arabia