Non-invasive oxygenation support in acutely hypoxemic COVID-19 patients admitted to the ICU: a multicenter observational retrospective study oleh Pedro David Wendel-Garcia, Arantxa Mas, Cristina González-Isern, Ricard Ferrer, Rafael Máñez, Joan-Ramon Masclans, Elena Sandoval, Paula Vera, Josep Trenado, Rafael Fernández, Josep-Maria Sirvent, Melcior Martínez, Mercedes Ibarz, Pau Garro, José Luis Lopera, María Bodí, Joan Carles Yébenes-Reyes, Carles Triginer, Imma Vallverdú, Anna Baró, Fernanda Bodí, Paula Saludes, Mauricio Valencia, Ferran Roche-Campo, Arturo Huerta, Francisco José Cambra, Carme Barberà, Jorge Echevarria, Óscar Peñuelas, Jordi Mancebo, for the UCIsCAT study group