Searching for unpublished trials in Cochrane reviews may not be worth the effort

• 作者Mieke L. van Driel; An De Sutter; Jan De Maeseneer; Thierry Christiaens
• 卷第62卷
• 期第8期
• 印刷ISSN0895-4356
• 文件大小205.15KB
• 发表时间2009
• DOI10.1016/j.jclinepi.2008.09.010