1. Oslo University Hospital Oslo Norway
2. Regional Department for Eating Disorders, Division of Mental Health and Addiction, Institute of Clinical Medicine, University of Oslo Oslo Norway
3. Amsterdam UMC, Location Vrije Universiteit Amsterdam, Medical Psychology, de Boelelaan 1117 Amsterdam Netherlands
4. Amsterdam Public Health, Mental Health Amsterdam Netherlands
5. Department of Psychiatry and Behavioral Sciences Stanford University Stanford California USA
6. Joslin Diabetes Center, Harvard Medical School Boston Massachusetts USA