Shortterm efficacy of tiotropium bromide  combined with budesonide and  formoterol fumarate dihydrate in bronchial asthmaCOPD overlap syndrome
Tan Jingfu，Ye Yongqing，Yang Longfeng，Chen Yong，Liao Zhenhui
Clinical Focus . 2016, (8): 886 -888,892 .  DOI: 10.3969/j.issn.1004-583X.2016.08.019