APA

Hernandez-Rocha, C., Barra-Carrasco, J., Pizarro-Guajardo, M., Ibanez, P., Bueno, S., Sarker, M., Maria Guzman, A., Alvarez-Lobos, M., & Paredes-Sabja, D. (2012). Epidemic Clostridium difficile Ribotype 027 in Chile. : Centers for Disease Control and Prevention.