Gutiérrez Ossa, Jahir Alexander, and Rubén Darío Restrepo Avendaño. “Pespective of the Modulation in the General of Health and Social Security in Colombia”. Universidad y Salud 15, no. 2 (November 5, 2013): 256–268. Accessed April 12, 2026. https://revistas.udenar.edu.co/index.php/usalud/article/view/2368.