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Efficacy of cognitive enhancers for Alzheimer’s disease: protocol for a systematic review and network meta-analysis

Andrea C Tricco, Sondra vanderVaart, Charlene Soobiah, Erin Lillie, Laure Perrier, Maggie H Chen, Brenda Hemmelgarn, Sumit R Majumdar and Sharon E Straus*

Systematic Reviews 2012, 1:31  doi:10.1186/2046-4053-1-31

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