1. 1Department of Endocrinology, Morbid Obesity and Preventive Medicine, Oslo University Hospital, Oslo, Norway
2. 2Institute of Clinical Medicine, Faculty of Medicine, University of Oslo, Oslo, Norway
3. 3MRC Integrative Epidemiology Unit, University of Bristol, Bristol, United Kingdom
4. 4Population Health Sciences, Bristol Medical School, University of Bristol, Bristol, United Kingdom
5. 5Department of Pediatric and Adolescents Medicine, Akershus University Hospital, Lørenskog, Norway
6. 6General Practice Research Unit (AFE), Department of General Practice, Institute of Health and Society, University of Oslo, Oslo, Norway
7. 7Department of Nutrition, Institute of Basic Medical Sciences, Faculty of Medicine, University of Oslo, Oslo, Norway
8. 8Vitas Ltd. Analytical Services, Oslo Science Park, Oslo, Norway
9. 9The University of Queensland Diamantina Institute, The University of Queensland, Woolloongabba, Queensland, Australia
10. 10Department of Public Health and Nursing, K.G. Jebsen Center for Genetic Epidemiology, Norwegian University of Science and Technology (NTNU), Trondheim, Norway
11. 11Institute of Molecular Biosciences, The University of Queensland, Brisbane, Queensland, Australia
12. 12Lund University Diabetes Centre, Malmö, Sweden
13. 13Institute for Molecular Medicine Finland (FIMM), University of Helsinki, Helsinki, Finland