The efficacy of adding budesonide/formoterol to ipratropium plus theophylline in managing severe chronic obstructive pulmonary disease: an open-label, randomized study in China

od Kewu Huang, Yanfei Guo, Jian Kang, Li An, Zeguang Zheng, Lijun Ma, Liping Peng, Hongyang Wang, Rong Su, Yohji Itoh, Chen Wang
Izdano 2019-06-01