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Kurmi OP, Li L, Smith M, et al. Regional variations in the prevalence and misdiagnosis of air flow obstruction in China: baseline results from a prospective cohort of the China Kadoorie Biobank (CKB). BMJ Open Resp Res 2014;1:e000025. doi:10.1136/bmjresp-2014-000025

The author Zhenming Chen has been corrected to read Zhengming Chen.

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