全部

1·DESIGN: Randomized and double blind observation.

设计：随机双盲法观察。

2·Methods: Randomized double blind study was employed.

方法：随机双盲对照临床研究。

3·Methods The random and double blind method was used.

方法采用随机双盲方法。

4·DESIGN: Randomly double blind and control experiment.

设计：随机双盲对照实验。

5·Methods:this was a randomized, double blind controlled trial.

方法：采用随机双盲对照研究。

6·Methods The random clinical study with double blind was used.

方法采取随机双盲对照临床研究。

7·The answer is the gold standard double blind, placebo controlled study.

答案是“金标准”，双盲，安慰剂对照研究。

8·Methods A random, double blind, and placebo control study was conducted.

方法采用随机双盲、安慰剂平行对照研究。

9·DESIGN: a completely randomized, double blind controlled trial was conducted.

设计：完全随机双盲实验对照研究。

10·METHODS: The parallel double blind randomized control clinical trial was used.

方法：采用平行双盲随机对照研究。