DESIGN: Randomized, single blind and placebo control prospective study based on patients.

设计: 以患者为研究对象,随机 、 盲、慰剂对照的前瞻性研究.

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Single Blind trial: Patient doesnt know the drug.

公开瓶签,公开试药: 知道药性的一切.

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Method A Radomized, single blind blood pressures was measured by 24 hours ambulatory blood pressure monitoring.

方法采用随机 、 单盲和平行对照的方法,运用24小时动态血压监测.

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Methods It was a randomized, single blind, parallel controlled and multiple center trial design.

方法采用随机单盲平行对照多中心试验方法.

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