%0 Journal Article %T Proportion and clinical characteristics of non-asthmatic non-smokers among adults with airflow obstruction %A Hayato Miyachi %A Hiromi Tomomatsu %A Hiroto Takiguchi %A Katsuyoshi Tomomatsu %A Koichiro Asano %A Kyoko Niimi %A Naoki Hayama %A Satomi Asai %A Takuya Aoki %A Tetsuya Urano %A Tomoe Takeuchi %A Tsuyoshi Oguma %J Archive of "PLoS ONE". %D 2018 %R 10.1371/journal.pone.0196132 %U https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5942827/