Targeting disabled and at risk older adults for inclusion in population based studies.
Williamson
J D
JD
Center for Aging and Health, Johns Hopkins University School of Medicine, Baltimore, Maryland 21205, USA.
Fried
L P
LP
D000375:Aging / Q000502:physiology*; D004185:Disability Evaluation; D006233:Persons with Disabilities / Q000706:statistics & numerical data*; D005260:Female; D006801:Humans; D012307:Risk Factors