1. Nordic School of Holistic Medicine and Quality of Life Research Center, Teglgårdstræde 4-8, DK-1452 Copenhagen K, Denmark
2. Clalit Health Services and National Institute of Child Health and Human Development, Ben Gurion University, Beer-Sheva, Israel
3. National Institute of Child Health and Human Development, Faculty of Health Sciences, Ben Gurion University of the Negev, Beer-Sheva and Office of the Medical Director, Division for Mental Retardation, Ministry of Social Affairs, Jerusalem, Israel