1. Faculty of Social Science, Department of Behavioral Sciences, Academic College of Judea and Samaria, Ariel, DN Ephraim 44837, Israel
2. Division of Community Health, Ben Gurion University, Beer-Sheva, Israel
3. Zusman Child Development Center, Division of Pediatrics, Ben Gurion University, Beer-Sheva, Israel
4. National Institute of Child Health and Human Development, Office of the Medical Director, Division for Mental Retardation, Ministry of Social Affairs, Jerusalem and Division of Pediatrics, Ben Gurion University, Beer-Sheva, Israel