title: Secondhand smoke exposure and risk of lung cancer in Japan: a systematic review and meta-analysis of epidemiologic studies.
authors.affiliation: Mie University, Mie, Japan.
authors.forename: Satoru
authors.initials: S
authors.lastname: Shikata
authors.affiliation: Mie University, Mie, Japan.
authors.forename: Yousuke
authors.initials: Y
authors.lastname: Takemura