这应该是作者描述自己在做这篇文章时所做的数据调查工作.
对截至2010年1月以前被正规电子数据库检索收录的全部出版文献进行浏览.
选取了具有如下条件的文献：
采取了临床随机对照试验,分别使用阿托伐他丁治疗与安慰剂治疗(即0剂量)作为对照,对充血性心力衰竭患者的疗效进行试验,并且对临床结果做出试验报告的文献.
英语翻译The published literature was scanned by formal searches
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