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。
The double-blind, randomized, placebo-controlled study included 24 patients ages 48 to 84.
该双盲随机严格对照试验纳入了24名48到84岁的患者。
Methods a multicenter, double-blind, randomized controlled trial was conducted.
方法用多中心随机双盲对照试验。
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