1. Division of Cardiac Surgery, Cardiovascular Department King Faisal Specialist Hospital and Research Center Jeddah Saudi Arabia
2. Cardiothoracic Surgery Department Tanta University Tanta Egypt
3. Cardiac Surgery Intensive Care Unit (CSICU) Cardiovascular Department King Faisal Specialist Hospital and Research Center Jeddah Saudi Arabia
4. Intensive Care Unit Basildon and Thurrock University Hospital Essex UK