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Bruera E, Sweeney C, Russell N, Willey JS, Palmer JL.Bruera E, et al. Among authors: willey js.J Pain Symptom Manage. 2003 Jul;26(1):637-43. doi: 10.1016/s0885-3924(03)00204-5.J Pain Symptom Manage. 2003.PMID: 12850646Free article.