1 Research & Innovation Center, King Saud Medical City, Ministry of Health and College of Medicine, Alfaisal University, Riyadh 12746, Saudi Arabia; Hubert Department of Global Health, Rollins School of Public Health, Emory University, Atlanta, GA, USA. Electronic address: zmemish@yahoo.com.
2 Division of Pulmonary and Critical Care Medicine, Department of Medicine, NYU-Winthrop, NYU Langone, Mineola, NY, USA.
3 University of Zürich Centre for Travel Medicine, WHO Collaborating Centre for Travellers' Health, Department of Public and Global Health, Institute for Epidemiology, Biostatistics and Prevention, Zürich, Switzerland.
4 Faculty of Medicine and Odontostomatology, University Clinical Research Center, University of Sciences, Techniques and Technology of Bamako, Mali.
5 Global Centre for Mass Gatherings Medicine, Ministry of Health, Riyadh, Saudi Arabia; Department of Emergency Medicine, College of Medicine, King Saud University, Riyadh, Saudi Arabia.