Uninsured and underserved: inequities in health care in the United States.
D000293:Adolescent; D000328:Adult; D000367:Age Factors; D000368:Aged; D002648:Child; D003625:Data Collection; D006291:Health Policy; D006296:Health Services / Q000706:statistics & numerical data; D006304:Health Status; D006801:Humans; D008489:Medical Indigency; D008875:Middle Aged; D012959:Socioeconomic Factors; D014481:United States