1. Health, United States, 1980;National Center for Health Statistics,1981
2. Aging, natural death, and the compression of morbidity;Fries;N Engl J Med,1980
3. Vitality and Aging: Implications of the Rectangular Curve;Fries,1981
4. Manual ability as a marker of dependency in geriatric women;Williams;J Chron Dis,1982
5. Musculoskeletal components of decrepitude;Williams,1981