1. Israel Center for Disease Control, Ministry of Health; Tel Hashomer 52621 Israel
2. Department of Maternal; Child and Adolescent Health, Public Health Services, Ministry of Health; Jerusalem 9101002 Israel
3. School of Public Health; University of Haifa; Haifa 3498838 Israel
4. Department of Epidemiology and Health Services Evaluation, Faculty of Health Sciences; Ben-Gurion University of the Negev; Beer-Sheva 8410501 Israel
5. District Health Office, Southern District, Ministry of Health; Beer-Sheva 8489312 Israel
6. The Bridge to Peace Community Pediatric Center; Taibe 40400 Israel
7. Public Health Nursing, Ministry of Health; Jerusalem 9101002 Israel
8. Department of Epidemiology and Preventive Medicine; Sackler School of Medicine, Tel Aviv University; Tel Aviv 6997801 Israel