1. Department of Anesthesia and Intensive Care, School of Medicine, The University of Jordan, Amman 11942, Jordan
2. UCSF Center for Health Equity in Surgery and Anesthesia, San Francisco, CA 94158, USA
3. Department of Anesthesia and Intensive Care, Arab Medical Center, Amman 11181, Jordan
4. Department of General Surgery and Anesthesia and Urology, Faculty of Medicine, The Hashemite University, Zarqa 13133, Jordan
5. Department of Internal Medicine, School of Medicine, The University of Jordan, Amman 11942, Jordan