1. 1. Lee E, Wilson CE, Lara-Valencia F, de la Parra CA, Van R, Patron-Soberano K, et al. The state of the border report: a comprehensive analysis of the US-Mexico Border. Washington,DC: Wilson Center, 2013.
2. 2. Molzahn C, Ríos V, Shirk DA. Drug violence in Mexico: Data and analysis through 2011. San Diego: Trans-Border Institute, 2012.
3. 3. Consejo Nacional de Población (CONAPO). Índice de marginación por localidad 2010. México: Consejo Nacional de Población, 2012; [cited 2016 Feb]. Available from: http://www.conapo.gob.mx/en/CONAPO/Indice_de_Marginacion_por_Localidad_2010.
4. 4. Wilson Center. The State of the Border Report. A comprehensive analysis of the US-Mexico border. Washington, DC: Wilson Center, 2013.
5. 5. Lange JE, Voas RB, Johnson MB. South of the border: A legal haven for underage drinking. Addiction. 2002;97(9):1195-203. https://doi.org/10.1046/j.1360-0443.2002.00182.x