Funding for this research was provided by:
Laerdal Foundation for Acute Medicine (3253)
Received: 19 June 2018
Accepted: 31 August 2018
First Online: 6 September 2018
Ethics approval and consent to participate
: The study was deemed exempt from ethics approval by the Ethical Committee of the Capital Region, Copenhagen Denmark (Protocol no. 17006007). The Danish Data Protection Agency approved the study (j.nr: 2012–58-0004). All participants provided informed consent prior to enrolment in the study.
: Not applicable.
: The authors declare that they have no competing interests.
: Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.