Family structure and the use of agency services: an examination of patterns among elderly Native Americans.
D000368:Aged; D005190:Family; D006296:Health Services / Q000706:statistics & numerical data*; D006301:Health Services Needs and Demand; D006302:Health Services Research; D006801:Humans; D007198:Indians, North American; D008875:Middle Aged; D009658:North Dakota; D013023:South Dakota