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2Investigation reportPublished in 2016Repositorio Repositorio Institucional ECI
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3Investigation reportPor González García, Jairo; Alzate Escobar, Wilmar Edison; Romero Ramírez, René Ramiro; Vélez Cifuentes, Jorge Hernán; Arroyave Gallego, Carlos Andrés; Montoya Hernández, Hugo Armando; Sierra Avila, Griselda; Berrío Alvarez, Olga CeciliaPublished in 2000Repositorio Repositorio Minciencias