Del Castillo, H. et al. 2009. Multidrug and extensively-drug resistant tuberculosis (MDR/XDR) epidemic in Peru: situation and proposals for its control. Revista Peruana de Medicina Experimental y Salud Pública. 26, 3 (Sep. 2009). DOI:https://doi.org/10.17843/rpmesp.2009.263.1391.