Pachajoa, Harry, Wilmar Saldarriaga, and Carolina Isaza. “ from March 2004 to February 2006”. Colombia Medica 39, no. 2 Supl 2 (June 30, 2008): 35–40. Accessed May 2, 2024. https://colombiamedica.univalle.edu.co/index.php/comedica/article/view/583.