Dámaso-Mata, Bernardo, et al. “Estimation of Economic Costs for the Care of Patients With Nosocomial Pneumonia in a Regional Peruvian Hospital, 2009–2011”. Revista Peruana De Medicina Experimental Y Salud Pública, vol. 33, no. 2, June 2016, pp. 233-40, https://doi.org/10.17843/rpmesp.2016.332.2202.