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

方法：采用随机、对照、双盲、双模拟、多中心试验设计方法。

youdao

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

方法：采用随机、对照、双盲、双模拟、多中心试验设计方法。

youdao