1. SILK, Department of Ophthalmology, Faculty of Medicine and Health Technology Tampere University Tampere Finland
2. Finnish Register of Visual Impairment Finnish Federation of the Visually Impaired Helsinki Finland
3. Department of Ophthalmology University of Eastern Finland and Kuopio University Hospital Kuopio Finland
4. Department of Knowledge Brokers Finnish Institute for Health and Welfare Helsinki Finland
5. Region Stockholm Academic Primary Health Care Centre Stockholm Sweden
6. Department of Molecular Medicine and Surgery Karolinska Institute Stockholm Sweden
7. Tays Eye Centre Tampere University Hospital Tampere Finland