Rivera-Jacinto, Marco, Claudia Rodríguez-Ulloa, and John López-Orbegoso. 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.