1 Department of Medicine, King Abdulaziz Medical City, King Abdulaziz International Medical Research Center, Ministry of National Guard - Health Affairs, Riyadh, Saudi Arabia. rajkumarrajendram@doctors.org.uk.
2 College of Medicine, King Saud Bin Abdulaziz University for Health Sciences, Riyadh, Saudi Arabia. rajkumarrajendram@doctors.org.uk.
3 Department of Cardiac Anesthesia and Intensive Care, Istituto Cardiocentro Ticino, Ente Ospedaliero Cantonale, Lugano, Switzerland.
4 Unit of Anesthesia and Intensive Care, Department of Clinical-Surgical, Diagnostic and Pediatric Sciences, University of Pavia, Pavia, Italy.
5 Anesthesia and Intensive Care, Fondazione Policlinico San Matteo Hospital IRCCS, Pavia, Italy.
6 Quality Emergency Department, NewYork-Presbyterian Health System, New York, USA.
7 Department of Cardiac Sciences, King Abdulaziz Medical City, King Abdulaziz International Medical Research Center, Ministry of National Guard - Health Affairs, Riyadh, Saudi Arabia.