METHODS: The parallel double blind randomized control clinical trial was used.
方法：采用平行双盲随机对照研究。
Methods: a clinical trial by randomized, double-blind, parallel control was conducted. The control drug was imported cefmetazole.
方法：采用双盲、随机、平行对照试验设计，以进口头孢美唑钠为对照药物。
METHODS: Cortex fraxini total coumarin was involved in a randomized, double-blind, placebo parallel control, dosage-reaction design and superiority test.
方法：采用随机、双盲、安慰剂平行组对照、剂量反应研究设计和优效性检验。
Methods A double-blind, randomized, parallel-control and multi-center trial was carried out and Kangbingdu Granule served as positive control.
方法以抗病毒冲剂为对照药，进行随机、双盲、阳性平行对照、多中心临床试验。
Methods Subgroup analysis of a perspective multicenter randomized double blind and parallel control study was performed.
方法 采用前瞻性、多中心、随机、双盲和平行对照临床研究的亚组分析。
Methods Subgroup analysis of a perspective multicenter randomized double blind and parallel control study was performed.
方法 采用前瞻性、多中心、随机、双盲和平行对照临床研究的亚组分析。
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