Quijada-Martínez, Pedro, et al. “Clinical and Microbiological Study of Catheter-Associated Urinary Tract Infections in Internal Medicine Services of a Venezuelan University Hospital”. Revista Peruana De Medicina Experimental Y Salud Pública, vol. 34, no. 1, Mar. 2017, pp. 52-61, https://doi.org/10.17843/rpmesp.2017.341.2766.