1. College of Medicine, King Saud University, Riyadh 11362, Saudi Arabia
2. Division of Pediatric Cardiology, Cardiac Science Department, College of Medicine, King Saud University Medical City, Riyadh 11362, Saudi Arabia
3. Pediatric Cardiology Section, Heart Center, King Faisal Specialist Hospital & Research Center, Riyadh 11211, Saudi Arabia
4. Department of Family and Community Medicine, King Saud University Medical City, Riyadh 11362, Saudi Arabia
5. Pediatric Department, King Saud University Medical City, Riyadh 11362, Saudi Arabia
6. Critical Care Department, King Saud University Medical City, Riyadh 11362, Saudi Arabia
7. Solid Organ Transplant Center of Excellence, King Faisal Specialist Hospital and Research Center, Riyadh 11564, Saudi Arabia
8. Family Medicine Center, King Saud University Medical City, Riyadh 11362, Saudi Arabia
9. Evidence-Based Health Care & Knowledge Translation Research Chair, Family & Community Medicine Department, College of Medicine, King Saud University, Riyadh 11362, Saudi Arabia
10. Division of Infectious Diseases, Department of Internal Medicine, King Saud University Medical City, Riyadh 11362, Saudi Arabia
11. Department of Psychiatry, King Saud University, Riyadh 11362, Saudi Arabia
12. College of Medicine, Sulaiman Al Rajhi University, Al-Bukayriah 51941, Saudi Arabia
13. College of Medicine, Imam Mohammed Ibn Saud Islamic University, Riyadh 11432, Saudi Arabia
14. Department of Clinical Sciences, College of Medicine, University of Sharjah, Sharjah 27272, United Arab Emirates
15. Research Institute for Medical and Health Sciences, University of Sharjah, Sharjah 27272, United Arab Emirates
16. Department of Internal Medicine, College of Medicine, University of Ottawa, Ottawa, ON K1H 8M5, Canada
17. Specialty Internal Medicine and Quality Department, Johns Hopkins Aramco Healthcare, Dhahran 34465, Saudi Arabia
18. Infectious Disease Division, Department of Medicine, Indiana University School of Medicine, Indianapolis, IN 46202, USA
19. Infectious Disease Division, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, MD 21218, USA
20. Prince Abdullah bin Khaled Coeliac Disease Research Chair, King Saud University, Riyadh 11362, Saudi Arabia