Grey literature in meta-analyses of randomized trials of health care interventions.

BACKGROUND: The inclusion of grey literature (i.e. literature that has not been formally published) in systematic reviews may help to overcome some of the problems of publication bias, which can arise due to the selective availability of data. OBJECTIVES: To review systematically research studies,...

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Bibliographic Details
Main Authors: Hopewell, S, McDonald, S, Clarke, M, Egger, M
Format: Journal article
Language:English
Published: 2007