1 The Global Centre for Mass Gatherings Medicine, Ministry of Health, Riyadh 12341, Saudi Arabia. Electronic address: saber.yezli@gmail.com.
2 The Global Centre for Mass Gatherings Medicine, Ministry of Health, Riyadh 12341, Saudi Arabia.
3 The Global Centre for Mass Gatherings Medicine, Ministry of Health, Riyadh 12341, Saudi Arabia; Department of Emergency Medicine, College of Medicine, King Saud University, Riyadh, Saudi Arabia.