Text and Data Mining valid from 2019-11-27
Received: 8 July 2019
Accepted: 11 November 2019
First Online: 27 November 2019
Ethics approval and consent to participate
: This study was approved by the local Ethics Committee of Zurich, Switzerland (KEK ZH 2015–0396). The need for informed consent of family members of deceased patients was waived, informed consent of surviving patients was obtained.
: Not applicable.
: There are no financial conflicts of interest. DAB is the medical director of the EMS Winterthur.