Vallelonga, F., F. A. Diella, M. Converso, G. De Filippi, F. Bosco, F. Panero, F. Aprà, and F. Elia. “COVID-19 in Sub-Intensive Care Unit: An Italian Single-Center Experience Along the Three Epidemic Waves”. Emergency Care Journal, vol. 18, no. 3, Sept. 2022, doi:10.4081/ecj.2022.10648.