Methods: A randomized, placebo contmlled, doubleblindtrial was used.
方法：采用随机双盲、平行对照临床试验方法。
2
Coenzyme Q10 decreases all cause mortality byhalf, according to the results of a multicentre randomised doubleblindtrial presented today at Heart Failure 2013 congress.
根据今天在心衰2013会议上公布的多中心随机双盲实验的结果，辅酶Q10减低一半所有原因的死亡率。
3
In a double-blindtrial, there were some improvements.