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Espin S, Lingard L, Baker GR, Regehr G.Espin S, et al. Among authors: baker gr.Qual Saf Health Care. 2006 Jun;15(3):165-70. doi: 10.1136/qshc.2005.017475.Qual Saf Health Care. 2006.PMID: 16751464Free PMC article.