Received: 5 December 2018
Accepted: 3 January 2019
First Online: 16 January 2019
Ethics approval and consent to participate
: Ethical approval was obtained from the Ethics Committee of the French Society of Anesthesiology and Intensive Care (IRB number: CERAR 00010254-2018-074). Our local database was declared to the French Data Protection Authority (declaration number 2166637v0). The patients and/or next of kin were informed about the inclusion of their anonymized health data in the database, and none declined participation.
: Not applicable
: The authors declare that they have no competing interests.
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