Gualli Asitimbay, M.A. , Mesa-Cano, I.C. y Ramírez-Coronel, A.A. 2021. The cold chain for the conservation of vaccines against covid-19: systemic review. Pro Sciences: Revista de Producción, Ciencias e Investigación. 5, 41 (dic. 2021), 282–289. DOI:https://doi.org/10.29018/issn.2588-1000vol5iss41.2021pp282-289.