The Efficacy and Safety of Shen Guo Lao Nian Granule for Common Cold of Qi-Deficiency Syndrome: Study Protocol for a Randomized, Double-Blind, Placebo-Controlled, Multicenter, Phase II Clinical Trial
Flowchart. 240 patients will be recruited in the study and randomly allocated to one of four groups (high-dose group = 60; middle-dose group = 60; low-dose group = 60; control group = 60). After 5 days of treatment, we analyze the data collected and make conclusion.
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