Dwan K, Altman DG, Cresswell L, Blundell M, Gamble CL, Williamson PR. Comparison of protocols and registry entries to published reports for randomised controlled trials. Cochrane Database Syst Rev 2011, Issue 1: Art. No.: MR000031, DOI: 10.1002/14651858.MR000031.pub2.

Kirkham­­ JJ, Altman DG, Williamson PR. Bias due to changes in specified outcomes during the systematic review process. PLoS ONE (2010); 5(3): e9810.

Dwan K, Gamble C, Kolamunnage-Dona R, Mohammed S, Powell C, Williamson PR.  Assessing the potential for outcome reporting bias in a review: A tutorial. Trials (2010); 11:52.

Dwan K, Altman DG, Arnaiz JA, Bloom J, Chan AW, Cronin E, Decullier E, Easterbrook PJ, Von Elm E, Gamble C, Ghersi D, Ioannidis JPA, Simes J, Williamson PR: Systematic review of the empirical evidence of study publication bias and outcome reporting bias. PLoS ONE (2008a); 3(8): e3081.

Williamson PR and Gamble C. Application and investigation of a bound for outcome reporting bias. Trials (2007); 8:9.

Williamson PR, Gamble C. Identification and impact of outcome selection bias in meta-analysis. Statistics in Medicine (2005); 24: 1547-1561.

Williamson PR, Gamble C, Altman DG, Hutton JL. Outcome selection bias in meta-analysis. Statistical Methods in Medical Research (2005); 14: 515-524.

Hutton JL, Williamson PR. Bias in meta-analysis due to outcome variable selection within studies.  Journal of the Royal Statistical Society Series C (2000); 49: 359-370.

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