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Pérez-Crespo M, Silvestre JF, Lucas A, Mataix J, Ballester I.Pérez-Crespo M, et al. Among authors: silvestre jf.Actas Dermosifiliogr. 2009 May;100(4):291-7.Actas Dermosifiliogr. 2009.PMID: 19463232Spanish.