1. Pulmonologist, Medicine Department, King Abdulaziz Medical City, King Fahad National Guard Hospital, Riyadh, Saudi Arabia
2. Internist, Medicine Department, King Abdulaziz Medical City, King Fahad National Guard Hospital, Riyadh, Saudi Arabia
3. Intensivest, Intensive Care Department, King Abdulaziz Medical City, King Fahad National Guard Hospital, Riyadh, Saudi Arabia
4. Psychiatrist, King Abdulaziz Medical City, King Fahad National Guard Hospital, Riyadh, Saudi Arabia