1. Division of Mental Health and Addiction Regional Department for Eating Disorders Oslo University Hospital Oslo Norway
2. Department of Psychology Faculty of Social Sciences University of Oslo Oslo Norway
3. Department of Social Services and Health Care Fredrikakliniken Jakobstad Finland
4. Faculty of Education and Welfare Studies Åbo Akademi University Vasa Finland
5. The Norwegian Psychological Association Oslo Norway
6. The Institute of Eating Disorders Hunger House Oslo Norway
7. Department of Medical Epidemiology and Biostatistics Karolinska Institutet Stockholm Sweden