Received: 7 November 2019
Accepted: 11 February 2020
First Online: 24 February 2020
Ethics approval and consent to participate
: Ethics approval was deemed unnecessary according to national regulations. Specific approval for the study was granted by Head of the Orthopedic Clinic, Haukeland University Hospital, Bergen, Norway. All potential participants and the medical management in the clinic received written information about the study, and written informed consent was based on their voluntary participation in the anonymous survey.
: Not applicable.
: The authors declare that they have no competing interests.