方法：按照就诊先后随机将患者分为治疗组和对照组。
Methods: According to the registration order, patients were divided into treatment group and control group.
随机分为试验组、阴性对照组和治疗组，每组10例。
Divided randomly into test group, negative control group, and treatment group, 10 persons per group.
随机分为试验组、阴性对照组和治疗组，每组10例。
Divided randomly into test group, negative control group, and treatment group, 10 persons per group.
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