B. Dámaso-Mata, J. Chirinos-Cáceres, and L. Menacho-Villafuerte, “Estimation of economic costs for the care of patients with nosocomial pneumonia in a regional Peruvian hospital, 2009–2011”, Rev Peru Med Exp Salud Publica, vol. 33, no. 2, pp. 233–240, Jun. 2016, doi: 10.17843/rpmesp.2016.332.2202.