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Sierra Colomina G, García Lara N, Escuder Vieco D, Vázquez Román S, Cabañes Alonso E, Pallás Alonso CR.Sierra Colomina G, et al.An Pediatr (Barc). 2014 Apr;80(4):236-41. doi: 10.1016/j.anpedi.2013.05.017. Epub 2013 Jul 3.An Pediatr (Barc). 2014.PMID: 23831205Free article.Spanish.