Effectiveness of Xin Jia Xuan Bai Cheng Qi Decoction in Treating Acute Exacerbation of Chronic Obstructive Pulmonary Disease: Study Protocol for a Multicentre, Randomised, Controlled Trial
BMJ Open - United Kingdom
doi 10.1136/bmjopen-2019-030249
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November 1, 2019
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BMJ