1. From the College of Optometry, Ohio State University, Columbus, Ohio;
2. the Department of Ophthalmology and Visual Sciences, Kentucky Lions Eye Center, Louisville, Kentucky;
3. the Nuffield Laboratory of Ophthalmology, Oxford University, Oxford, United Kingdom;
4. the Departments of Ophthalmology and 5Pathology and Laboratory Science, Jules Stein Eye Institute, University of California Los Angeles, Los Angeles, California;
5. the Department of Ophthalmology, Keio University School of Medicine, Tokyo, Japan;
6. Georgetown University, Washington, DC;
7. Schepens Eye Research Institute and the 9Department of Ophthalmology, Harvard Medical School, Boston, Massachusetts.