Original Research

COPD and its association with smoking in the Mainland China: a cross-sectional analysis of 0.5 million men and women from ten diverse areas

Kurmi OP, Li L, Wang J, Millwood IY, Chen J, Collins R, Guo Y, Bian Z, Li J, Chen B, Xie K, Jia W, Gao Y, Peto R, Chen Z

International Journal of Chronic Obstructive Pulmonary Disease 2015, 10:655-665

Published Date: 20 March 2015