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In this blog, Jamie Hartmann-Boyce from the Cochrane Tobacco Addiction Group and Martin Dockrell from the Office of Health Improvement and Disparities share 7 things you need to know about e-cigarettes and quitting smoking.
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The Oxford Centre for Evidence-Based Medicine (CEBM) develops, teaches, promotes and disseminates better evidence for healthcare.
What if the data I want are reported for the wrong group?
Data extraction tips for meta-analysis