Word limits best explain failings of industry supported meta-analyses

Abstract
Footnotes Competing interests: JJD has contributed to the Cochrane Collaboration for over a decade, is currently a member of the steering group of the Cochrane Collaboration and Treasurer. He has co-authored 14 Cochrane reviews, and is the lead editor of the statistical section of the Cochrane Handbook. The views expressed here are his own and not necessarily those of the Cochrane Collaboration. His previous unit (Centre for Statistics in Medicine, Oxford) received funding from Pfizer and Searle to undertake the review mentioned in reference 2 and JJD received consultancy fees from Pfizer from 2001-2. Both his previous and current units have received royalties from the BMJ on sales of reprints of reference 2.