1. From the Departments of Ophthalmology, andthe 2EMGO+ Institute for Health and Care Research, and
2. the EMGO+ Institute for Health and Care Research, and3Epidemiology and Biostatistics, VU University Medical Center, Amsterdam, the Netherlands; and the
3. the EMGO+ Institute for Health and Care Research, and
4. From the Departments of Ophthalmology, andthe 2EMGO+ Institute for Health and Care Research, and4Department of Ophthalmology, Elkerliek Hospital, Helmond, the Netherlands.