1. Neuropsychiatric Epidemiology; Institute of Neuroscience and Physiology; University of Gothenburg; Gothenburg Sweden
2. Gillberg Neuropsychiatry Centre; Institute of Neuroscience and Physiology; University of Gothenburg; Gothenburg Sweden
3. Department of Psychiatry; University of Rochester Medical Center; Rochester NewYork US
4. Section for Psychiatry/Huddinge; Department of Clinical Neuroscience; Karolinska Institute; Stockholm Sweden
5. Department of Primary Health Care; Sahlgrenska School of Public Health and Community Medicine; University of Gothenburg; Gothenburg Sweden
6. Centre for Clinical Research; Falun Dalarna Sweden
7. Department of Public Health Epidemiology; Sahlgrenska School of Public Health and Community Medicine; University of Gothenburg; Gothenburg Sweden