随机双盲平行对照研究 Randomized double-blind parallel contrast study
方法采用随机双盲、安慰剂平行对照研究。
Methods A random, double blind, and placebo control study was conducted.
方法本研究采用随机、双盲、平行对照的临床研究方法。
Methods A randomized double-blind parallel controlled clinical trial was conducted.
方法：采用平行双盲随机对照研究。
METHODS: The parallel double blind randomized control clinical trial was used.
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