Rivera-Jacinto, M., Rodríguez-Ulloa, C., & López-Orbegoso, J. (2009). Fecal contamination in green vegetables that are sold in markets of Cajamarca city, Peru. Revista Peruana De Medicina Experimental Y Salud Pública, 26(1). https://doi.org/10.17843/rpmesp.2009.261.1332