Uptake of methods to deal with publication bias in systematic reviews has increased over time, but there is still much scope for improvement
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Competing interest: none declared.
Authors' contributions: F.S., Y.K.L., L.H., J.J.R., A.J.S., and I.H. developed the review protocol. S.P.B., J.J.R., and F.S. conducted literature search. S.P.B., F.S., L.H., Y.K.L., J.J.R., C.B.H., C.S.K., and C.P. extracted and/or checked data from included studies. F.S., A.J.S., and I.H. provided methodological support. S.P.B., F.S., C.S.K., and C.P. analyzed data and drafted the article. All authors commented on the final manuscript.
PII: S0895-4356(10)00197-6
doi:10.1016/j.jclinepi.2010.04.022
© 2011 Elsevier Inc. All rights reserved.
