1. From the Department of Ophthalmology, VU University Medical Center and the EMGO+ Institute for Health and Care Research, VU University Medical Center, Amsterdam, the Netherlands;
2. Bartiméus, Deventer, the Netherlands;
3. Department of Epidemiology and Biostatistics, VU University Medical Center; and the EMGO+ Institute for Health and Care Research, VU University Medical Center, Amsterdam, the Netherlands; and the
4. From the Department of Ophthalmology, VU University Medical Center and the EMGO+ Institute for Health and Care Research, VU University Medical Center, Amsterdam, the Netherlands; 4Department of Ophthalmology, Elkerliek Hospital, Helmond, the Netherlands.