Factors associated with mechanical ventilation in SARS-CoV-2 patients treated with high-flow nasal cannula oxygen and outcomes - Leroux, Xavier; Schock, Maud; Augereau, Olivier; Lessire, Henry; Bouterra, Charles; Belilita, Lounis; Rerat, Pierre; Alvarez, Antonio; Martinot, Martin; Gerber, Victor (JOURNAL OF MEDICAL VIROLOGY, 2022)