@article{article4cd2821f, title = {Temporal trends of severity and outcomes of critically ill patients with COVID-19 after the emergence of variants of concern: a comparison of two waves}, author = {Freitas, Daniela Helena Machado and Costa, Eduardo Leite Vieira and Zimmermann, Natalia Alcantara and Gois, Larissa Santos Oliveira and Anjos, Mirella Vittig Alves and Lima, Felipe Gallego and Andrade, Pamela Santos and Sabino, Ester Cerdeira and Carvalho, Carlos Roberto Ribeiro De and Ferreira, Juliana Carvalho}, year = {2024}, doi = {10.1371/journal.pone.0299607}, journal = {PLOS ONE} }