1. Wilmer General Eye Services, The Johns Hopkins Hospital, Baltimore, Maryland
2. Wilmer Eye Institute, Baltimore, Maryland
3. Department of Ophthalmology, Johns Hopkins School of Medicine, Baltimore, Maryland
4. Administrations Department, The Johns Hopkins Hospital, Baltimore, Maryland
5. Division of Health Sciences Informatics, Johns Hopkins School of Medicine, Baltimore, Maryland
6. Wilmer Eye Institute at Odenton, Odenton, Maryland
7. Department of Health Policy and Management, Johns Hopkins Carey Business School, Baltimore, Maryland
8. Ophthalmology Registration, Johns Hopkins School of Medicine, Baltimore, Maryland
9. Biostatistics Consulting Center, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland