Received: 1 November 2019
Accepted: 11 April 2020
First Online: 22 April 2020
Ethics approval and consent to participate
: This observational study was approved by the ethics committee of the French Intensive Care Society (<i>Société de Réanimation de Langue Française</i>). All patients and families were informed through a letter that anonymous data would be used for this research and gave their consent.
: Not applicable.
: The authors declare that they have no conflict of interests.