1. Department of Respiratory Therapy, College of Applied Medical Sciences, King Saud bin Abdulaziz University for Health Sciences, Riyadh, Saudi Arabia
2. King Abdullah International Medical Research Center, Riyadh, Saudi Arabia
3. King Abdulaziz Medical City, Ministry of National Guard Health Affairs, Riyadh, Saudi Arabia
4. Department of Emergency Medical Services, College of Applied Medical Sciences, King Saud bin Abdulaziz University for Health Sciences, Riyadh, Saudi Arabia
5. Department of Rehabiltation Health Sciences, College of Applied Medical Sciences, King Saud University, Riyadh, Saudi Arabia
6. Department of Respiratory Care, College of Applied Medical Sciences, King Faisal University, Al-Ahasa, Saudi Arabia
7. Department of Respiratory Therapy, College of Applied Medical Sciences, King Saud bin Abdulaziz University for Health Sciences, AlAhsa, Saudi Arabia
8. King Abdullah International Medical Research Center, AlAhsa, Saudi Arabia
9. King Saud University Medical City, Riyadh, Saudi Arabia