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Zhou YM, Chen SY, Tian J, Cui JY, Li XC, Hong W, Zhao ZX, Hu GP, He F, Qiu R, Wang XP, Wang DL, Zheng JP, Zhong NS, Ran PX. Development and validation of a chronic obstructive pulmonary disease screening questionnaire in China. Int J Tuberc Lung Dis. 2013 Dec;17(12):1645–51. doi: 10.5588/ijtld.12.0995. PMID: 24200283. |