Does occupational exposure to dust prevent colorectal cancer?
D000328:Adult; D000368:Aged; D015179:Colorectal Neoplasms / Q000401:mortality*; D004391:Dust; D006801:Humans; D008875:Middle Aged; D016273:Occupational Exposure; D009864:Ontario / Q000453:epidemiology
D004391:Dust