适当的分组隐匿及遮蔽（盲法）之良好的随机对照试验是需要的。

There is a need for well-conducted RCTs with adequate allocation concealment and masking (blinding).

youdao

适当的分组隐匿及遮蔽（盲法）之良好的随机对照试验是需要的。

There is a need for well-conducted RCTs with adequate allocation concealment and masking (blinding).

youdao