Journal of Clinical Epidemiology (2009) - Comments
pubmed: 19230612  doi: 10.1016/j.jclinepi.2008.10.012  issn: 1878-5921  issn: 0895-4356 

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Margaret Sampson, Jessie McGowan, Elise Cogo, Jeremy Grimshaw, David Moher, Carol Lefebvre