title: Cancer associations at the country level and shared risk factors--a fuzzy concept?
authors: Experimental Pathology and Chemotherapy Division, National Cancer Center Research Institute, Tokyo, Japan.
authors: M A
authors: MA
authors: Moore
authors: T
authors: T
authors: Kunimoto
authors: H
authors: H
authors: Tsuda
mesh_terms: D004777:Environment; D005260:Female; D017143:Fuzzy Logic; D006801:Humans; D015994:Incidence; D008297:Male; D009369:Neoplasms / Q000209:etiology* / Q000235:genetics; D009378:Neoplasms, Multiple Primary / Q000209:etiology; D012307:Risk Factors