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Leung YW, Gravely-Witte S, Macpherson A, Irvine J, Stewart DE, Grace SL.Leung YW, et al.J Health Psychol. 2010 Oct;15(7):1049-63. doi: 10.1177/1359105309360577. Epub 2010 May 14.J Health Psychol. 2010.PMID: 20472608