1. Infection Disease Unit, Department of Medicine, College of Medicine, King Saud University, Riyadh, Saudi Arabia
2. Department of Clinical Science, College of Medicine, Princess Nourah bint Abdulrahman University, Riyadh, Saudi Arabia
3. Rheumatology Division, Department of Medicine, College of Medicine, King Saud University, Riyadh, Saudi Arabia
4. Gastroenterology Unit, Department of Medicine, College of Medicine, King Saud University, Riyadh, Saudi Arabia
5. Infectious Disease Unit, Department of Medicine, College of Medicine, King Saud University, Riyadh, Saudi Arabia
6. Department of Critical Care, College of Medicine, King Saud University, Riyadh, Saudi Arabia
7. Department of Emergency, Department of Medicine, College of Medicine, King Saud University, Riyadh, Saudi Arabia