Health services research and health policy issues.
D000368:Aged; D002140:California; D003695:Delivery of Health Care; D005102:Health Expenditures; D006285:Health Planning; D006296:Health Services; D006801:Humans; D008297:Male; D008484:Medicaid; D006278:Medicare; D011787:Quality of Health Care; D012106:Research; D014481:United States