Rodríguez Guzmán, Sandra, et al. “Differences in Mobility, Traffic Accidents and Associated Circumstances in Guatemalan and Spanish University Students”. Revista Peruana De Medicina Experimental Y Salud Pública, vol. 32, no. 4, Dec. 2015, pp. 717-23, https://doi.org/10.17843/rpmesp.2015.324.1763.