1. Department of Epidemiology of Microbial Diseases, Yale School of Public Health, New Haven, Connecticut
2. Infection Prevention and Control Unit, Sheba Medical Center, Ramat Gan, Israel
3. Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel
4. Pediatric Infectious Diseases Unit, Soroka University Medical Center, Be’er Sheva, Israel
5. Faculty of Health Sciences, Ben-Gurion University of the Negev, Be’er Sheva, Israel