Searching for unpublished data for Cochrane reviews: cross sectional study

标题
Searching for unpublished data for Cochrane reviews: cross sectional study
作者
关键词
-
出版物
BMJ-British Medical Journal
Volume 346, Issue apr23 1, Pages f2231-f2231
出版商
BMJ
发表日期
2013-04-23
DOI
10.1136/bmj.f2231

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