1. Internal Medicine C, Sheba Medical Center, Tel HaShomer, Israel;
2. Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel;
3. Goldschleger Eye Institute, Sheba Medical Center, Tel HaShomer, Israel;
4. Department of Otolaryngology, Sheba Medical Center, Tel HaShomer, Israel;
5. Infectious Disease Unit, Sheba Medical Center, Tel HaShomer, Israel