1. The Age-Related Eye Disease Study (AREDS);Control Clin Trials,1999
2. The Wisconsin Age-related Maculopathy Grading System;Klein;Ophthalmology,1991
3. Klein R, Davis MD, Magli YL, Segal P, Klein BEK, Hubbard LD. The Wisconsin Age-related Maculopathy Grading System. Accession No. PB 91-184267, National Technical Information Service, US Department of Commerce, 5285 Port Royal Rd., Springfield, VA 22161. Also reprinted as Section 15A of the AREDS Manual of Operations.
4. Prevalence of age-related maculopathy; the Beaver Dam Eye Study;Klein;Ophthalmology,1992
5. The five-year incidence and progression of age-related maculopathy. The Beaver Dam Eye Study;Klein;Ophthalmology,1997