1. Department of General Practice and Elderly Care Medicine; VU University Medical Centre; Amsterdam the Netherlands
2. Amsterdam Public Health Research Institute; VU University Medical Centre; Amsterdam the Netherlands
3. Department of Ophthalmology and Visual Sciences; University of Iowa Hospital and Clinics; Iowa City IA USA
4. VA Medical Center; Iowa City IA USA
5. IDx LLC; Iowa City IA USA
6. Department of Ophthalmology; VU University Medical Centre; Amsterdam the Netherlands
7. Department of Ophthalmology; Elisabeth-Tweestedenziekenhuis; Tilburg the Netherlands
8. Department of Ophthalmology; University Medical Centre Utrecht; Utrecht the Netherlands