1. Joslin Diabetes Center, Harvard Medical School, Boston, Massachusetts, United States 2KG Jebsen Center for Diabetes Research, Department of Clinical Science, University of Bergen, Bergen, Norway
2. Joslin Diabetes Center, Harvard Medical School, Boston, Massachusetts, United States 3Beetham Eye Institute, Boston, Massachusetts, United States
3. Joslin Diabetes Center, Harvard Medical School, Boston, Massachusetts, United States
4. Department of Ophthalmology, Nordland Hospital, Bodø, Norway
5. KG Jebsen Center for Diabetes Research, Department of Clinical Science, University of Bergen, Bergen, Norway 5Department of Clinical Medicine, University of Bergen, Bergen, Norway 6Department of Pathology, Haukeland University Hospital, Bergen, Norway
6. KG Jebsen Center for Diabetes Research, Department of Clinical Science, University of Bergen, Bergen, Norway 7Department of Pediatrics, Haukeland University Hospital, Bergen, Norway
7. Department of Clinical Medicine, University of Bergen, Bergen, Norway 8Department of Ophthalmology, Haukeland University Hospital, Bergen, Norway