National health line.
Leukefeld
C G
CG
D000163:Acquired Immunodeficiency Syndrome / Q000191:economics; D000368:Aged; D004465:Economic Competition; D004469:Economics, Hospital; D006291:Health Policy; D006295:Health Resources; D006299:Health Services for the Aged; D006801:Humans; D011787:Quality of Health Care; D019966:Substance-Related Disorders / Q000453:epidemiology; D014481:United States