1. 1College of Medicine, Al-Imam Muhammad Ibn Saud Islamic University, Riyadh, Saudi Arabia
2. 2Department of Anesthesia, College of Medicine, King Saud bin Abdulaziz University for Health Sciences, Ministry of National Guard, Riyadh, Saudi Arabia
3. 3Department of Epidemiology, King Saud bin Abdulaziz University for Health Sciences, Riyadh, Saudi Arabia
4. 4College of Public Health and Health Informatics, King Saud bin Abdulaziz University for Health Sciences, Riyadh, Saudi Arabia
5. 5King Abdullah International Medical Research Center, Riyadh, Saudi Arabia