Rojas, Jorge H., Helmer Zapata, Alberto Alzate, and Álvaro Rodríguez. “ Year 2002”. Colombia Medica 39, no. 1 (March 31, 2008): 66–73. Accessed May 20, 2024. https://colombiamedica.univalle.edu.co/index.php/comedica/article/view/551.