Céspedes, M. et al. 2007. Prevalence of antibodies against Leptospira in asymptomatic persons and dogs in Chancay, Lima 2001. Revista Peruana de Medicina Experimental y Salud Pública. 24, 4 (Dec. 2007). DOI:https://doi.org/10.17843/rpmesp.2007.244.1132.