1. From the Department of Epidemiology Research, Statens Serum Institut, Copenhagen, Denmark; the2Department of Ophthalmology, Glostrup University Hospital, Copenhagen, Denmark; the
2. From the Department of Epidemiology Research, Statens Serum Institut, Copenhagen, Denmark; the
3. Department of Ophthalmology, Rigshospitalet, University Hospital of Copenhagen, Copenhagen, Denmark; and the
4. Department of Ophthalmology, Aarhus University Hospital, Aarhus, Denmark.