1. From the Pennsylvania College of Optometry, Salus University, Elkins Park, Pennsylvania;
2. Schepens Eye Research Institute, Boston, Massachusetts;
3. the Jean Mayer USDA Human Nutrition Research Center on Aging, Tufts University, Boston, Massachusetts;
4. DSM Nutritional Products Ltd., Kaiseraugst, Switzerland;
5. the Department of Medical Informatics and Bioinformatics, University of Münster, Münster, Germany; and
6. the Oregon National Primate Research Center and Casey Eye Institute, Oregon Health and Science University, Beaverton, Oregon.