1. Internal Medicine Department, King Fahad Military Medical Complex, Dammam 34313, Saudi Arabia
2. Department of Internal Medicine, College of Medicine, Imam Abdulrahman Bin Faisal University, Dammam 34313, Saudi Arabia
3. Department of Clinical Laboratory Sciences, Prince Sultan Military College of Health Sciences, Dammam 31448, Saudi Arabia
4. Department of Respiratory Care, Prince Sultan Military College of Health Sciences, Dammam 31448, Saudi Arabia
5. Respiratory Therapy Department, Faculty of Applied Medical Sciences, Jazan University, Jazan 45142, Saudi Arabia
6. Pharmacy Department, King Fahad Military Medical Complex, Dammam 34313, Saudi Arabia
7. Medical Administration Department, King Fahad Military Medical Complex, Dammam 34313, Saudi Arabia
8. Training Department, King Fahad Military Medical Complex, Dammam 34313, Saudi Arabia
9. Internal Medicine Department, National Guard Hospital, Alhassa 31982, Saudi Arabia