1. Department of Medicine; Sahlgrenska Academy at the University of Gothenburg; Gothenburg Sweden
2. Department of Ophthalmology, Helsingborg Hospital; Lund University; Helsingborg Sweden
3. Department of Public Health and Clinical Medicine, Epidemiology; Umeå University; Umeå Sweden
4. Department of Clinical and Experimental Medicine; Linköping University Hospital; Linköping Sweden
5. Department of Endocrinology, Metabolism, and Diabetes; Karolinska University Hospital Huddinge, Karolinska Institutet; Solna Sweden
6. Department of Clinical Sciences; Lund University; Lund Sweden
7. Department of Medical Sciences; Uppsala University; Uppsala Sweden