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, vol. 15, no. 2, Nov. 2013, pp. 256-68, https://revistas.udenar.edu.co/index.php/usalud/article/view/2368.