controlled clinical trials
randomized controlled clinical trials
Multi-center random controlled clinical trials
Randomized-controlled clinical trials
Acupuncture clinical trials
Adaptive clinical trials
Clinical controlled trial
Clinical trials of investigational new drugs
Clinical trials of post-marketing drugs
Clinical trials simulation
Controlled clinical research
controlled clinical study
Controlled clinical trails
Controlled clinical trial
临床对照研究
临床对照试验
对照临床试验
临床试验
半随机对照研究
Double blind double dummy randomized controlled clinical trial
large-scale clinical trials