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  • Image attributed to: Jason Snyder, FlickR, CC 2.0

    Sponsorships and publication bias

    Publication bias regarding the effects of statins in animals is unexpectedly higher in studies non sponsored by industry and may be due to a failure in publishing negative results.

    BMC Medical Research Methodology 2015, 15:12
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    Please complete this survey!

    Multiple mailings and telephone messages encourage higher participation in follow-up surveys, while personalizing contacts surprisingly has no effects on patient recruitment.

    BMC Medical Research Methodology 2015, 15:5
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