Received: 9 March 2022
Accepted: 13 June 2022
First Online: 21 June 2022
: In unresponsive patients, informed consent was first obtained from the legal representatives. Consent for the use of the study data was asked later if the patient recovered consciousness. The study data were used if the patient died before consent was obtained, and the legal representatives were informed of the study. The study was approved by the local institutional review board (METc 2015/004 (SICS-I) and 2018/203 (SICS-II)).
: Not applicable.
: The authors declare that they have no competing interests.