Xuan Bai Cheng Qi Formula as an Adjuvant Treatment of Acute Exacerbation of Chronic Obstructive Pulmonary Disease of the Syndrome Type Phlegm-Heat Obstructing the Lungs: A Multicenter, Randomized, Double-Blind, Placebo-Controlled Clinical Trial

BMC Complementary and Alternative Medicine - United Kingdom
doi 10.1186/1472-6882-14-239
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Springer Science and Business Media LLC