1. Department of Cardiac Surgical Intensive Care Unit (CSICU), Heart Center, King Faisal Specialist Hospital and Research Center, Riyadh, Saudi Arabia
2. Department of Adult Cardiac (Surgical) Intensive Care Unit (ACICU), Intensive Care Department, Prince Sultan Cardiac Center, Prince Sultan Military Medical City, Riyadh, Saudi Arabia
3. Department of Critical Care Medicine, Faculty of Medicine, Cairo University, Cairo, Egypt
4. Division of Cardiac Surgery, John Paul II Foundation, Campobasso, Italy
5. Department of Anesthesiology-Cardiac Surgical Intensive Care Unit (CSICU) and Cardiac Surgery, SS Annunziata Hospital, Chieti, Italy
6. Department of Cardiology, Spatocco Clinic, Chieti, Italy