1. Department of Psychology, University of Oslo, Oslo, Norway
2. Department of Clinical Neurosciences for Children, Oslo University Hospital, Oslo, Norway
3. Children’s Clinic, St. Olav University Hospital, Trondheim, Norway
4. Department of Clinical and Molecular Medicine, NTNU, Trondheim, Norway
5. Psychosomatic Medicine and Clinical Psychiatry, Oslo University Hospital, Oslo, Norway
6. Department of Research, Lovisenberg Diaconal Hospital, Oslo, Norway