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Waller A, Girgis A, Currow D, Lecathelinais C; Palliative Care Research Program team.Waller A, et al.Palliat Med. 2008 Dec;22(8):956-64. doi: 10.1177/0269216308098797. Epub 2008 Oct 24.Palliat Med. 2008.PMID: 18952754