Hernández-Vásquez, A. et al. 2021. Hypromellose derivatives for preventing SARS-CoV-2 infection: a systematic review. Revista Peruana de Medicina Experimental y Salud Pública. 38, 3 (Sep. 2021), 469–71. DOI:https://doi.org/10.17843/rpmesp.2021.383.9116.