Chávez-Ruiz, Manuel, Lenin Rueda-Torres, Cristofer Bellido-Achahui, Frescia Madueño-Ventura, and Betsabé Ruffner-Camargo. 2021. “Evaluation of the Filtration Efficiency of Respiratory Protective Equipment Against SARS-CoV-2”. Revista Peruana De Medicina Experimental Y Salud Pública 38 (3): 467-8. https://doi.org/10.17843/rpmesp.2021.383.7564.