1. King Khalid University Hospital, Riyadh, Saudi Arabia.
2. Department of Pathology, College of Medicine, King Saud University, Riyadh, Saudi Arabia.
3. Department of Infectious Diseases, College of Medicine, King Saud University, Riyadh, Saudi Arabia.
4. King Abdulaziz City for Science and Technology, Riyadh, Saudi Arabia.
5. Critical Care Unit, Prince Mohammed Bin Abdulaziz Hospital, Ministry of Health, Riyadh, Saudi Arabia.
6. Corona Center, Prince Mohammed Bin Abdulaziz Hospital, Ministry of Health, Riyadh, Saudi Arabia.
7. Research and Innovation Center, King Saud Medical City, Ministry of Health, Riyadh, Saudi Arabia.
8. College of Medicine, Alfaisal University, Riyadh, Saudi Arabia.
9. Hubert Department of Global Health, Rollins School of Public Health, Emory University, Atlanta, Georgia, USA.