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Powis J, Etchells E, Martin DK, MacRae SK, Singer PA.Powis J, et al. Among authors: martin dk.BMC Palliat Care. 2004 May 23;3(1):2. doi: 10.1186/1472-684X-3-2.BMC Palliat Care. 2004.PMID: 15154968Free PMC article.
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