1. Helsinki Retina Research Group, University of Helsinki, Helsinki, Finland
2. Health Services Dental Care, City of Helsinki, Helsinki, Finland
3. Department of Ophthalmology, Mehiläinen Private Hospital, Helsinki, Finland
4. Department of Oral and Maxillofacial Diseases, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
5. Department of Medicine and Dental Medicine, Karolinska Institutet, Stockholm, Sweden
6. Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer-Sheva, Israel
7. Department of Ophthalmology, Kymenlaakso Central Hospital, Kotka, Finland