1. Department of Family and Community Medicine, College of Medicine, Alfaisal University, Riyadh 11533, Saudi Arabia
2. Department of Emergency Medicine, King Faisal Specialist Hospital and Research Center, Riyadh 11564, Saudi Arabia
3. College of Medicine, Alfaisal University, Riyadh 11533, Saudi Arabia
4. School of Kinesiology and Health Science, York University, Toronto, ON M3J 1P3, Canada