设计：这是一项随机对照的交叉试验。

Design: This was a randomized, controlled, crossover trial.

youdao

我们也排除了半随机对照研究和使用交叉设计的试验。

We also excluded quasi-randomised trials and trials using a cross-over design.

youdao

我们也排除了半随机对照研究和使用交叉设计的试验。

We also excluded quasi-randomised trials and trials using a cross-over design.

youdao