Open access peer-reviewed chapter
By Lorena García, Carlos Wolff, Verónica Araya, Gloria López, Sergio Lobos, Pilar Durruty and Daniela Seelenfreund
Submitted: November 15th 2010Reviewed: April 21st 2011Published: September 12th 2011
DOI: 10.5772/21686
Downloaded: 2155
© 2011 The Author(s). Licensee IntechOpen. This chapter is distributed under the terms of the Creative Commons Attribution-NonCommercial-ShareAlike-3.0 License, which permits use, distribution and reproduction for non-commercial purposes, provided the original is properly cited and derivative works building on this content are distributed under the same license.
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Access personal reportingEdited by Colleen Croniger
Edited by Colleen Croniger
By Valmore Bermúdez, Joselyn Rojas, Miguel Aguirre, Clímaco Cano, Nailet Arraiz, Carlos Silva Paredes,Marcos Lima, Raquel Cano, Eneida Fonseca and Manuel Velasco
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