Physical disability in older Americans.
Guralnik
J M
JM
Epidemiology, Demography, and Biometry Program, National Institute on Aging, Bethesda, MD 20892.
Simonsick
E M
EM
D000203:Activities of Daily Living; D000368:Aged; D000369:Aged, 80 and over; D006233:Persons with Disabilities; D005260:Female; D016330:Frail Elderly; D006801:Humans; D008297:Male; D012648:Self Care