1. Department of Immunology; Oslo University Hospital and University of Oslo; Oslo Norway
2. Department of Medical Genetics; University of Oslo and Oslo University Hospital; Oslo Norway
3. Oslo Diabetes Research Centre; Oslo Norway
4. Department of Paediatrics, Division of Paediatric and Adolescent Medicine; Oslo University Hospital; Oslo Norway
5. The Norwegian Childhood Diabetes Registry, Division of Paediatric and Adolescent Medicine; Oslo University Hospital; Oslo Norway
6. Institute of Clinical Medicine, Faculty of Medicine; University of Oslo; Oslo Norway