Alegre, M., A. Gutiérrez, V. Oliván, E. Vara, M.A. Martínez-González, I. Aguinaga, and F. Guillén. 2009. “Prevalence of Smoking, Awareness and Evaluation of Cessation Methods Amongst Medical Students”. Anales Del Sistema Sanitario De Navarra 22 (2):233-40. https://doi.org/10.23938/ASSN.0499.