title: Interpretation of negative epidemiological evidence for carcinogenicity. Proceedings of a symposium held in Oxford, 4-6 July 1983. Purpose of symposium.
mesh_terms: D000818:Animals; D004812:Epidemiologic Methods; D006801:Humans; D009369:Neoplasms / Q000139:chemically induced* / Q000453:epidemiology; D009374:Neoplasms, Experimental / Q000139:chemically induced; D012306:Risk