1. Sackler School of Medicine, Tel-Aviv University, Tel-Aviv, Israel
2. Division of Communicable Diseases, Bureau of Disease Control, Prevention & Epidemiology, Michigan Department of Community Health, 201 Townsend St, Lansing, MI, USA, 48909
3. Department of Internal Medicine D, Shaare Zedek Medical Center, Jerusalem, Israel
4. Division of Infectious Diseases, Assaf Harofeh Medical Center, Zerifin, Israel