1. SILK Department of Ophthalmology Faculty of Medicine and Health Technology Tampere University Tampere Finland
2. South Karelia Social and Health Care District South Karelia Finland
3. Public Health Promotion Unit Finnish Institute for Health and Welfare Helsinki Finland
4. Saudi Diabetes Research Group King Abdulaziz University Jeddah Saudi Arabia
5. Department of International Health National School of Public Health Instituto de Salud Carlos III Madrid Spain
6. Center for Life Course Health Research University of Oulu Oulu Finland
7. Tays Eye Centre Tampere University Hospital Tampere Finland