中国当代医药
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中国当代医药  2021, Vol. 28 Issue (6): 58-60    DOI:
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Effect of Tiotropium Bromide on bronchial asthma in the elderly
DING Shuang
The First Department of Respiratory Medicine,Iron and Coal General Hospital of Liaoning Health Industry Group,Liaoning Province,Tieling 112700,China
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