Received: 31 January 2020
Accepted: 17 June 2020
First Online: 29 June 2020
Ethics approval and consent to participate
: No nominative, sensitive or personal data on patients have been collected. Our study involves the reuse of already recorded and anonymised data. The study falls within the scope of the French Reference Methodology MR-005 according to 2016–41 law dated 26 January 2016 on the modernisation of the French health system, which require neither information nor non-opposition of the included individuals. Access to linked anonymous file in the PMSI databases was approved by the French National Commission for Data Protection and Liberties (CNIL MR-005 number 4116221019).
: Not applicable
: Consultancies: Aerogen Ltd. (SE), La diffusion technique française (SE) and Becton Dickinson (AG). Research support: Aerogen Ltd. (SE), Fisher & Paykel (SE) and Hamilton (SE). Travel fees: Aerogen Ltd. (SE) and Fisher & Paykel (SE). Others authors have no competing interests to declare.