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1by Vera de Bilbao,N, Elías,E, Martínez,J, Carpinelli de Tomassone,M, Torres,S, Sosa,L, Díaz,V
Published 2006Digital revistaSCIELO -
2by Leguizamón,MA, Cabello,MA, Carpinelli,MM, Cabral,MB, Elías,E, Laspina,F, Ruiz,A, Pérez Quiñoy,JL, Pino,Y
Published 2003Digital revistaSCIELO