Oncology services in United States.
D003153:Community Health Services; D003695:Delivery of Health Care; D006076:Government; D006296:Health Services; D006801:Humans; D008495:Medical Oncology; D009313:National Health Programs; D009316:National Institutes of Health (U.S.); D009369:Neoplasms / Q000517:prevention & control / Q000628:therapy; D012955:Societies, Medical; D014481:United States