Funding for this research was provided by:
Regione del Veneto
Received: 6 April 2021
Accepted: 4 July 2021
First Online: 28 July 2021
: The study was approved by the Institutional Ethical Committee of each participating center (coordinator center approval reference number 4853AO20, while the full list of all approval reference numbers is available in Additional file InternalRef removed).
: Written informed consent was obtained from each patient according to national regulation.
: None related to the present work. PN received royalties from Intersurgical for Helmet Next invention and speaking fees from Philips, Resmed, MSD, Drager and Novartis. The other authors have no other competing interests to declare.