Valente, M., J. Oliveira, T. Barbosa, S. Ribeiro, D. Nuñez, A. Santos, and I. Pereira. “COVID-19 Pandemic and the Critical Patient: Experience of Treating Patients in a PACU Converted into an ICU Versus Patient Treated in an ICU”. Journal of the Portuguese Society of Anesthesiology, vol. 29, no. 2, Aug. 2020, pp. 62-67, doi:10.25751/rspa.20379.