Capsoni, N., D. Privitera, C. Airoldi, S. Gheda, A. Mazzone, G. Terranova, F. Galbiati, and A. Bellone. “Evaluation of PaCO₂ Trend in COVID-19 Patients Undergoing Helmet CPAP in the Emergency Department”. Emergency Care Journal, vol. 19, no. 2, June 2023, doi:10.4081/ecj.2023.11274.