Sarmiento López, A.M. and De Paz Flores, J.A. 2019. Sanitary warnings and neutral packaging of tobacco products in the perception of Salvadorans. Alerta, Revista científica del Instituto Nacional de Salud. 2, 2 (Jul. 2019), 135–143. DOI:https://doi.org/10.5377/alerta.v2i2.7942.