Factors associated with clinical progression to severe COVID-19 in people with cystic fibrosis: A global observational study., Carr, Siobhán B., McClenaghan Elliot, Elbert Alexander, Faro Albert, Cosgriff Rebecca, Abdrakhmanov Olzhas, Brownlee Keith, Burgel Pierre-Régis, Byrnes Catherine A., Cheng Stephanie Y., et al. , J Cyst Fibros, 2022 07, Volume 21, Issue 4, (2022)