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Moscote-Salazar LR, Castellar-Leones SM, Gutiérrez-Paterninab JJ, Alcalá-Cerra G.Moscote-Salazar LR, et al.Bol Asoc Med P R. 2012 Sep-Dec;104(4):58-9.Bol Asoc Med P R. 2012.PMID: 23763227Spanish.