方法：采用多中心随机盲法对照试验，180名患者随机分成滚针组和药物组各90例。
Methods Multi-central randomized blind controlled trials were used, and 180 cases were randomly divided into a rolling needle group and a medication group, 90 cases in each group.
此阶段的研究设计可以根据具体的研究目的，采用多种形式，包括随机盲法对照临床试验。
Various forms may be employed for the study design of this phase in accordance with the specific study purpose, including randomized controlled clinical trial.
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