Document is current

Article History

Received: 13 July 2019

Accepted: 2 December 2019

First Online: 12 December 2019

Ethics approval and consent to participate

: Ethics approval was not applicable in this study. The Norwegian Social Science Data Service approved the treatment of personal information – project reference <i>38617</i>. The hospital administrative heads granted the research, by permitting employers to participate. All participants gave a written consent to participate in the study.

: Not applicable.

: The authors declare that they have no competing interests.