1. Aravind Eye Care System, Madurai, Pondicherry, Tirunelveli, and Coimbatore, India
2. Francis I. Proctor Foundation, University of California, San Francisco, San Francisco
3. Dartmouth Medical School, Lebanon, New Hampshire
4. Department of Ophthalmology, University of California, San Francisco, San Francisco
5. UCSF Epidemiology and Biostatistics, University of California, San Francisco, San Francisco
6. Byers Eye Institute, Stanford University, Palo Alto, California