1. Projections of the population of the United States by age, sex, and race: 1983–2080;US Bureau of Census,1984
2. United States life tables: US decennial life tables for 1979–1981;National Center For Health Statistics,1985
3. National health interview survey 1983–1985,1986
4. National nursing home survey,1985
5. Cardiac surgery in the octogenarian;Tsai;J Thorac Cardiovasc Surg,1986