Original Research

Validity of COPD diagnoses reported through nationwide health insurance systems in the People’s Republic of China

Kurmi OP, Vaucher J, Xiao D, Holmes MV, Guo Y, Davis KJ, Wang C, Qin H, Turnbull I, Peng P, Bian Z, Clarke R, Li L, Chen Y, Chen Z

International Journal of Chronic Obstructive Pulmonary Disease 2016, 11:419-430

Published Date: 1 March 2016