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Bosch X, Foix A, Jordan A, Coca A, López-Soto A.Bosch X, et al.Clinics (Sao Paulo). 2011;66(5):737-41. doi: 10.1590/s1807-59322011000500005.Clinics (Sao Paulo). 2011.PMID: 21789373Free PMC article.