Ortega Lenis, Delia, and Fabian Mendez. “Survey on Health, Well-Being and Aging. SABE Colombia 2015: Technical Report”. Colombia Médica 50, no. 2 (June 30, 2019): 128-138. Accessed January 22, 2022. https://colombiamedica.univalle.edu.co/index.php/comedica/article/view/3939.