方法：随机双盲双模拟对照试验。

METHODS: The double blind and random method was used.

youdao

方法：采用随机、双盲双模拟、平行对照方法。

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

youdao

方法：采用随机、对照、双盲、双模拟、多中心试验设计方法。

METHODS: The trial design was randomized, double blind, double modeling and multiple center.

youdao

方法：采用随机、对照、双盲、双模拟、多中心试验设计方法。

METHODS: The trial design was randomized, double blind, double modeling and multiple center.

youdao