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Kontopantelis E, Reeves D, Valderas JM, Campbell S, Doran T.Kontopantelis E, et al. Among authors: campbell s.BMJ Qual Saf. 2013 Jan;22(1):53-64. doi: 10.1136/bmjqs-2012-001033. Epub 2012 Aug 22.BMJ Qual Saf. 2013.PMID: 22918988
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Campbell SM, Braspenning J, Hutchinson A, Marshall M.Campbell SM, et al.Qual Saf Health Care. 2002 Dec;11(4):358-64. doi: 10.1136/qhc.11.4.358.Qual Saf Health Care. 2002.PMID: 12468698Free PMC article.
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