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Combs SA, Davison SN.Combs SA, et al. Among authors: davison sn.Curr Opin Support Palliat Care. 2015 Mar;9(1):14-9. doi: 10.1097/SPC.0000000000000110.Curr Opin Support Palliat Care. 2015.PMID: 25581447Free PMC article.Review.