Rivera-Jacinto M, Rodríguez-Ulloa C, Flores Clavo R, Serquén López L, Arce Gil Z. TEM and CTX-M extended-spectrum beta-lactamase in Klebsiella spp and Escherichia coli isolates from inanimate surfaces of hospital environments. Rev Peru Med Exp Salud Publica. 2015;32(4):752-755. doi:10.17843/rpmesp.2015.324.1768