1. Obesity Research Unit, Research Programs Unit, Diabetes and Obesity, University of Helsinki, Helsinki, Finland
2. Research Programs Unit, Molecular Neurology, Biomedicum-Helsinki, University of Helsinki, Helsinki, Finland
3. Siluetti Hospital, Helsinki, Finland
4. Department of Public Health, University of Helsinki, Helsinki, Finland
5. Helsinki Medical Imaging Center, University of Helsinki, Helsinki, Finland
6. Institute for Clinical Diabetology, German Diabetes Center, Leibniz Center for Diabetes Research, Heinrich Heine University, Düsseldorf, Germany
7. The Immunopharmacology Research Group, University of Tampere School of Medicine and Tampere University Hospital, Tampere, Finland
8. Institute for Molecular Medicine Finland, University of Helsinki, Helsinki, Finland
9. Finnish Twin Cohort Study, Department of Public Health, Hjelt Institute, University of Helsinki, Helsinki, Finland
10. National Institute for Health and Welfare, Department of Mental Health and Substance Abuse Services, Helsinki, Finland
11. Department of Psychiatry, Helsinki University Central Hospital, Helsinki, Finland
12. Department of Neurology, Helsinki University Central Hospital, Helsinki, Finland
13. Abdominal Center, Endocrinology, Helsinki University Central Hospital and University of Helsinki, Helsinki, Finland