1. Staff Immunohematologist, Department of Pathology and Laboratory Medicine, King Faisal Specialist Hospital and Research Center, Riyadh 11211, Saudi Arabia
2. Staff Cardiac Surgeon, Department of Surgery (Baylor Heart Team), King Faisal Specialist Hospital and Research Center, Riyadh 11211, Saudi Arabia
3. Staff Hematopathologist, Department of Pathology and Laboratory Medicine, King Faisal Specialist Hospital and Research Center, Riyadh 11211, Saudi Arabia
4. Chairman, Department of Anaesthesiology, King Faisal Specialist Hospital and Research Center, Riyadh 11211, Saudi Arabia