Author: Carol Sierra Ramirez, Nilton Rosas Camacho Deily, Jorge Luis Triana Sánchez, Carlos Andrés Ávila Palacio, Laura Elisa Rivera Montealegre, María del Pilar Salamanca Santos, Nora Cristina Osorio Gutiérrez, David Rodríguez Goyes, Ana Lucía Moncayo Albornoz, Source:Directory of Open Access Books Publication Date: 2015 View Open Access Book