Funding for this research was provided by:
Universitetet i Tromsø (IN-1096130)
Received: 13 September 2019
Accepted: 15 May 2020
First Online: 15 June 2020
Ethics approval and consent to participate
: The Regional Committee for Medical and Health Research Ethics approved the final protocol and concluded that written consent from patients was not required. All data are reported aggregated and anonymously, and patient confidentially is maintained. The Data Protection Officer at UNN had no objection to the final protocol, and approved the study.
: Not applicable.
: The authors declare that they have no competing interests.