1. Department of Environmental Health, Harvard T. H. Chan School of Public Health and MD-PhD Program, Harvard Medical School, Boston, Massachusetts
2. Department of Epidemiology, University of Michigan School of Public Health, Ann Arbor
3. Department of Ophthalmology, Duke University School of Medicine, Durham, North Carolina
4. VA Normative Aging Study, Veterans Affairs Boston Healthcare System, Department of Medicine, Boston University School of Medicine, Boston, Massachusetts
5. Department of Environmental Health Sciences, Columbia Mailman School of Public Health, New York, New York
6. Department of Environmental Health and Department of Epidemiology, Harvard T. H. Chan School of Public Health, Boston, Massachusetts
7. Department of Ophthalmology, Massachusetts Eye and Ear Infirmary, Harvard Medical School, Boston
8. Department of Environmental Health Sciences, University of Michigan School of Public Health, Ann Arbor