1. Department of Anesthesiology and Intensive Care, Faculty of Medicine, Jordan University of Science and Technology, P.O. Box 953, Irbid 21110, Jordan
2. Department of Special Surgery, Faculty of Medicine, Jordan University of Science and Technology, P.O. Box 953, Irbid 21110, Jordan
3. Department of Obstetrics & Gynecology, Faculty of Medicine, Jordan University of Science and Technology, P.O. Box 953, Irbid 21110, Jordan