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Article History

Received: 1 February 2021

Accepted: 28 May 2021

First Online: 5 June 2021

Declarations

:

: Ethics approval was deemed unnecessary according to national regulations in Norway “Lov om medisinsk og helsefaglig forskning (helseforskningsloven)” . The Norwegian Centre for Research Data approved the treatment of personal information – project reference 358427. All methods were carried out in accordance with relevant guidelines and regulations. <b>Informed consent</b> was obtained from all subjects.

: All participants have given consent for publication.

: The authors declare that they have no competing interests.