1. Department of Cardiothoracic Surgery/Cardiac Anaesthesia and ICU, Heart Hospital, Hamad Medical Corporation, Doha, Qatar
2. Department of Critical Care Medicine, Beni Suef University, Beni Suef, Egypt
3. Weill Cornell Medical College–Qatar, Doha, Qatar
4. Department of Anesthesia, Suez Canal University, Ismailia, Egypt
5. Department of Anesthesia, Al-Azhar University, Cairo, Egypt
6. Department of Anesthesia, Ain Shams University, Cairo, Egypt