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Morita T, Hirai K, Sakaguchi Y, Maeyama E, Tsuneto S, Shima Y; Quality Assurance Committee, Japanese Association of Hospice and Palliative Care Units.Morita T, et al.J Pain Symptom Manage. 2004 Jun;27(6):492-501. doi: 10.1016/j.jpainsymman.2003.10.014.J Pain Symptom Manage. 2004.PMID: 15165647Free article.