Assuring the quality of questionnaire data in epidemiologic research.
D003626:Data Display; D004812:Epidemiologic Methods; D006801:Humans; D012106:Research; D011795:Surveys and Questionnaires; D013549:Sweetening Agents / Q000009:adverse effects; D001749:Urinary Bladder Neoplasms / Q000139:chemically induced / Q000401:mortality
D013549:Sweetening Agents