31. Butt, A.L. et al. Prevalence and risks factors of age-related macular degeneration in Oklahoma Indians: the Vision Keepers Study. Ophthalmology, 2011; 118(7):1380-5.

31. Butt, A.L. et al. Prevalence and risks factors of age-related macular degeneration in Oklahoma Indians: the Vision Keepers Study. Ophthalmology, 2011; 118(7):1380-5.