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Bolas-Fernandez F, Albarran-Gomez E, Navarrete I, Martinez-Fernandez AR.Bolas-Fernandez F, et al.Zentralbl Veterinarmed B. 1993 Jun;40(4):229-38. doi: 10.1111/j.1439-0450.1993.tb00133.x.Zentralbl Veterinarmed B. 1993.PMID: 8237192