Institution: | (1) Reproductive Medicine, Department of Obstetrics & Gynecology, King Faisal Specialist Hospital and Research Centre, Riyadh, Saudi Arabia;(2) Alfaisal Collage of Medicine, Alfaisal University, Riyadh, Saudi Arabia;(3) Department of Pathology and Laboratory Medicine, King Faisal Specialist Hospital and Research Centre, Riyadh, Saudi Arabia |