title: Chronic obstructive pulmonary disease in China: a tale of two people.
authors.forename: Yong-chang
authors.initials: YC
authors.lastname: Sun
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D002681:China / Q000453:epidemiology; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D029424:Pulmonary Disease, Chronic Obstructive / Q000453:epidemiology* / Q000503:physiopathology; D012307:Risk Factors; D012907:Smoking; D011795:Surveys and Questionnaires