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Tiotropium in Early-Stage Chronic Obstructive Pulmonary Disease.
Zhou Y, Zhong NS, Li X, Chen S, Zheng J, Zhao D, Yao W, Zhi R, Wei L, He B, Zhang X, Yang C, Li Y, Li F, Du J, Gui J, Hu B, Bai C, Huang P, Chen G, Xu Y, Wang C, Liang B, Li Y, Hu G, Tan H, Ye X, Ma X, Chen Y, Hu X, Tian J, Zhu X, Shi Z, Du X, Li M, Liu S, Yu R, Zhao J, Ma Q, Xie C, Li X, Chen T, Lin Y, Zeng L, Ye C, Ye W, Luo X, Zeng L, Yu S, Guan WJ, Ran P. Zhou Y, et al. N Engl J Med. 2017 Sep 7;377(10):923-935. doi: 10.1056/NEJMoa1700228. N Engl J Med. 2017. PMID: 28877027 Free article. Clinical Trial.