Funding for this research was provided by:
Stiftelsen Norsk Luftambulanse
Received: 28 September 2018
Accepted: 19 February 2019
First Online: 4 March 2019
Ethics approval and consent to participate
: Prior to initiation, the study was approved by the local representative for the Norwegian Data Protection Authority (13–7751), the local representatives of the included organizations and the local leaders of each hospital trust.All participants received written and verbal information about the study and the right to withdraw from the study at any point during or after the interview. All study subjects signed a written consent for participation prior to the interview.
: 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.