1. Department of Clinical and Experimental Medicine, Faculty of Health Sciences, Linköping University, Linköping, Sweden
2. Department of Health and Caring Sciences, Faculty of Health and Life Sciences, Linnaeus University, Kalmar, Sweden
3. Department of Clinical Sciences, Ophthalmology, Faculty of Medicine, Lund University, Lund, Sweden
4. EyeNet Sweden, Karlskrona, Sweden