Design non-randomized clinical trial.

设计非随机化临床试验。

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METHODS: It was a randomized, double blind, double model, parallel controlled clinical trial.

方法：采用随机、双盲双模拟、平行对照方法。

youdao

METHODS: It was a randomized, double blind, double model, parallel controlled clinical trial.

方法：采用随机、双盲双模拟、平行对照方法。

youdao