1. Sackler School of Medicine, Tel-Aviv University, Tel-Aviv, Israel
2. Unit of Infection Control, Shamir (Assaf Harofeh) Medical Center, Zerifin, Israel
3. Department of Health Systems Management, Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer-Sheva, Israel
4. Clinical Microbiology Laboratory, Shamir (Assaf Harofeh) Medical Center, Zerifin, Israel
5. Department of Medicine A, Shamir (Assaf Harofeh) Medical Center, Zerifin, Israel