1. Department of Ophthalmology and Visual Sciences, McPherson Eye Research Institute, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin
2. Department of Epidemiology and Biostatistics, Case Western Reserve University, Cleveland, Ohio
3. Department of Social and Preventive Medicine, School of Public Health and Health Professions, University at Buffalo, The State University of New York, Buffalo, New York
4. Department of Ophthalmology, Oregon Health and Science University, Casey Eye Institute, Portland, Oregon
5. Jean Mayer USDA Human Nutrition Research Center on Aging, Tufts University, Boston, Massachusetts
6. Department of Population Health Sciences, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin
7. Department of Ophthalmology and Visual Sciences, University of Iowa Carver College of Medicine, Iowa City, Iowa
8. Department of Cancer Prevention Research Program, Fred Hutchinson Cancer Research Center, Seattle, Washington
9. Department of Epidemiology, University of Iowa College of Public Health, Iowa City, Iowa
10. Departments of Epidemiology and Medicine, University of Iowa College of Public Health, Iowa City, Iowa
11. Kaiser Center for Health Research, Portland, Oregon
12. Department of Obstetrics and Gynecology, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin
13. Moran Eye Center, University of Utah Health Care, Salt Lake City, Utah
14. National Institutes of Health, National Eye Institute, Clinical Trials Branch, Bethesda, Maryland