1. Pediatric Infectious Disease Unit Dana Children's Hospital Tel Aviv Israel
2. Sackler Faculty of Medicine Tel Aviv University Tel Aviv Israel
3. Department of Pediatric Intensive Care Sheba Medical Center Safra Children's Hospital Tel Hashomer Israel
4. Department of Obstetrics and Gynecology Lis Maternity Hospital Tel Aviv Israel
5. Microbiology Laboratory Tel Aviv Sourasky Medical Center Tel Aviv Israel