Effect of Bufei granule on stable chronic obstructive pulmonary disease: a randomized, double blinded, placebo-controlled, and multicenter clinical study

Sijia Guo, Zengtao Sun, Enshun Liu, Jihong Feng, Min Fu, Yuechuan Li, Qi Wu

Journal of Traditional Chinese Medicine . 2014, (04): 437 -444 . DOI: 10.1016/S0254-6272(15)30043-1