1. Gillberg Neuropsychiatry Centre Sahlgrenska Academy Institute of Neuroscience and Physiology Gothenburg and Sahlgrenska University Hospital University of Gothenburg Gothenburg Sweden
2. Institute of Psychology Stockholm University Stockholm Sweden
3. The Central Child Health Authority Gothenburg Sweden
4. Department of Paediatrics Institute of Clinical Sciences Sahlgrenska Academy University of Gothenburg and Sahlgrenska University Hospital Gothenburg Sweden