Study designs for diet and chronic disease.
D002908:Chronic Disease / Q000209:etiology*; D002986:Clinical Trials as Topic; D004032:Diet; D004812:Epidemiologic Methods; D006801:Humans; D009369:Neoplasms / Q000209:etiology; D009749:Nutrition Surveys; D011446:Prospective Studies; D012189:Retrospective Studies; D012306:Risk