Outcomes of COVID-19 patients intubated after failure of non-invasive ventilation: a multicenter observational study oleh Annalisa Boscolo, Laura Pasin, Nicolò Sella, Chiara Pretto, Martina Tocco, Enrico Tamburini, Paolo Rosi, Enrico Polati, Katia Donadello, Leonardo Gottin, Andrea Vianello, Giovanni Landoni, Paolo Navalesi, FERS, for the COVID-19 VENETO ICU Network