Randomized controlled double-blind clinical trial
Double blind randomized controlled trial
Double-blind randomized controlled trial
randomized double blind clinical trial
Randomized double-blind controlled trial
Double blind clinical trial
double blind double dummy
Double-blind randomized controlled
Randomized double-blind controlled study
Clinical randomized controlled trial
randomized controlled clinical trial
随机对照试验
随机对照临床试验
随机对照研究
临床随机研究
Multicenter randomized controlled clinical trial
double-blind randomized contrast
Double-blind randomized control
Randomized double-blind control
randomized double-blind control clinical trial
Randomized double-blind parallel control
clinical randomized controlled studies