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Pre-publication history

Meta-analysis, Simpson's paradox, and the number needed to treat

Douglas G Altman email and Jonathan J Deeks email

BMC Medical Research Methodology 2002, 2:3doi:10.1186/1471-2288-2-3

Pre-publication versions of this article and reviewers' reports

CommentEditor's comment25 Jan 2002
Accepted25 Jan 2002
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