Vaquerano Amaya, J.A. and Mártir, A.L. 2023. The opportunities and threats in the new normality of medium and large salvadoran companies under the context of the COVID-19 pandemic. Research journal. 2, 14 (Dec. 2023), 30–52. DOI:https://doi.org/10.5377/revunivo.v2i14.17023.