Received: 24 December 2020
Accepted: 17 February 2021
First Online: 25 February 2021
Ethics approval and consent to participate
: The study was conducted in conformity with the policy statement for the use of human subjects of the Declaration of Helsinki. It is regarded as a quality assurance project by the Regional Committee for Medical and Health Research Ethics (registration number S-20182000-130). Approval for conducting the study as a quality assurance project was granted by the Prehospital Organisation in the Region of Southern Denmark (Journal no. 19/14433).
: Not applicable.
: In relation to the project Annmarie Lassen’s research unit has received three months salary from Region of Southern Denmark for a research assistant and three months salary for data management from FALCK.None of the authors have any conflicts of interest or financial ties to disclose.