1. Department of Paediatrics, Haukeland University Hospital, Bergen, Norway;
2. Center for Diabetes Research, University of Bergen, Bergen, Norway;
3. Department of Clinical Medicine, University of Bergen, Bergen, Norway;
4. Medical Department, Voss Hospital, Voss, Norway;
5. Medical Department, Haukeland University Hospital, Bergen, Norway;
6. Department of Clinical Science, University of Bergen, Bergen, Norway