Funding for this research was provided by:
Regionalt Akuttmedisinsk Kompetansesenter (ePhortenummer 2017/7788 /prosjektnummer 441021)
Received: 7 April 2020
Accepted: 5 August 2020
First Online: 18 August 2020
Ethics approval and consent to participate
: All patients’ next of kin and all volunteers involved signed an informed consent form. This study was approved by the Regional Ethics Committee (REK-Vest number 2016/815 and 2017/162).
: Not applicable.
: The authors declare no competing interests.