Received: 20 July 2020
Accepted: 15 September 2020
First Online: 23 September 2020
Ethics approval and consent to participate
: The study was approved by the local institutional ethics committee (Hospices Civils de Lyon, chaired by Pr Jean-François GUÉRIN) under the number 20–62 and was registered to the French data protection authority under the number 20–137.
: Written information was delivered to the families of the included patients to give them opportunity to decline participation to this study; none declined to participate. In accordance with French legislation, a written consent was not required owing to the observational nature of the study.
: The authors declare that they have no competing interests.