1. Faculty of Medicine, Aalborg University, Aalborg, Denmark
2. Department of Ophthalmology, Rigshospitalet-Glostrup-Kennedy, Glostrup, Denmark 3Institute of Clinical Medicine, University of Copenhagen, Copenhagen, Denmark
3. Department of Epidemiology, Aalborg University Hospital, Aalborg, Denmark
4. Department of Ophthalmology, Aalborg University Hospital, Aalborg, Denmark
5. Department of Epidemiology, Aalborg University Hospital, Aalborg, Denmark 5Department of Ophthalmology, Aalborg University Hospital, Aalborg, Denmark