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Daig I, Heinemann LA, Kim S, Leungwattanakij S, Badia X, Myon E, Moore C, Saad F, Potthoff P, Thai do M.Daig I, et al.Health Qual Life Outcomes. 2003 Dec 15;1:77. doi: 10.1186/1477-7525-1-77.Health Qual Life Outcomes. 2003.PMID: 14675485Free PMC article.Review.