Author's reply to: Air pollution and incident bladder cancer: A risk assessment.

Kawada[1] also points out that our analysis employed unconditional as opposed to conditional logistic regression models to estimate associations of ambient air pollution and incident bladder cancer risk. Other analyses of air pollution and bladder cancer based on either minimal or fully adjusted approaches have also noted little change in relative risk estimates observed.[4] Ambient air pollution and incident bladder cancer risk: updated analysis of the Spanish bladder cancer study. [Extracted from the article]
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