Llanos-Torres, K.H. et al. 2020. Nosocomial infections in emergency observation units and their association with overcrowding and ventilation. Revista Peruana de Medicina Experimental y Salud Pública. 37, 4 (Oct. 2020), 721–5. DOI:https://doi.org/10.17843/rpmesp.2020.374.5192.