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