Gomez, Carolina A., et al. “Clinical and Microbiological Characteristics of Paediatric Patients Hospitalized for Pneumococcal Pneumonia before and After the Introduction of Pneumococcal Conjugate Vaccines”. Revista Peruana De Medicina Experimental Y Salud Pública, vol. 42, no. 1, Mar. 2025, https://doi.org/10.17843/rpmesp.2025.421.13847.