Zeladita-Huaman, Jhon Alex, et al. “Factors Associated With Attitudes towards Violence in Schoolchildren from Marginal Urban Areas of Metropolitan Lima, 2019”. Revista Peruana De Medicina Experimental Y Salud Pública, vol. 37, no. 4, Nov. 2020, pp. 627-35, https://doi.org/10.17843/rpmesp.2020.374.5154.