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Balboa-Castillo T, León-Muñoz LM, Graciani A, Rodríguez-Artalejo F, Guallar-Castillón P.Balboa-Castillo T, et al.Health Qual Life Outcomes. 2011 Jun 27;9:47. doi: 10.1186/1477-7525-9-47.Health Qual Life Outcomes. 2011.PMID: 21708011Free PMC article.