1. Department of Respiratory Care, College of Applied Medical Sciences, King Faisal University, Al-Ahasa 31982, Saudi Arabia
2. Respiratory Therapy Department, Faculty of Applied Medical Sciences, Jazan University, Jazan 45142, Saudi Arabia
3. Department of Respiratory Care, Prince Sultan Military College of Health Sciences, Dammam 34313, Saudi Arabia
4. Clinical Technology Department, Respiratory Care Program, Faculty of Applied Medical Sciences, Umm Al-Qura University, Makkah 21961, Saudi Arabia
5. Department of Respiratory Therapy, Faculty of Medical Rehabilitation Sciences, King Abdulaziz University, Jeddah 22254, Saudi Arabia
6. Department of Respiratory Therapy, King Saud Bin Abdelaziz University for Health Sciences, Al Ahsa 31982, Saudi Arabia
7. King Abdullah International Medical Research Center, Al Ahsa 31982, Saudi Arabia
8. Emergency Medical Services Program, College of Applied Medical Sciences, King Saud Bin Abdulaziz University for Health Sciences, Al Ahsa 31982, Saudi Arabia
9. Department of Respiratory Therapy, College of Applied Medical Sciences, King Saud Bin Abdulaziz University for Health Sciences, Riyadh 12271, Saudi Arabia
10. King Abdullah International Medical Research Center, Riyadh 12271, Saudi Arabia
11. Respiratory Therapy Department, College of Medical Rehabilitation Sciences, Taibah University, Madinah 41411, Saudi Arabia
12. Department of Respiratory Therapy, Faculty of Applied Medical Sciences, University of Bisha, Bisha 67114, Saudi Arabia
13. Taibah Primary Health Centre, Ministry of Health, Madinah 42353, Saudi Arabia