Salazar-Villegas, Billy, Oscar Marino Lopez-Mallama, and Hernando Mantilla-Mejía. 2023. “History of Health in Colombia: From the Pre-Columbian Period to the Hygienist Period 1953”. Journal of Economic and Social Science Research 3 (3): 1-12. https://doi.org/10.55813/gaea/jessr/v3/n3/69.