title: [Comparison study on lung function impairment degree between stage II+ and III].
authors.forename: Gang
authors.initials: G
authors.lastname: Chen
authors.forename: Guo-Xuan
authors.initials: GX
authors.lastname: Ma
authors.forename: Yan-Jun
authors.initials: YJ
authors.lastname: Li
mesh_terms: D000328:Adult; D000368:Aged; D006801:Humans; D008297:Male; D008875:Middle Aged; D011009:Pneumoconiosis / Q000473:pathology* / Q000503:physiopathology*; D012129:Respiratory Function Tests