Betancourt-Ocampo, D., González-González, A., Cruz-Mejía, O., Fernández-Varela, H. y Solís-Torres, C. (2018) «Risk behaviors in youth from Mexico City: a retrospective study», Drugs and Addictive Behavior (revista descontinuada), 3(2), pp. 167–181. doi: 10.21501/24631779.2882.