Mork, Randi
Falkenberg, Helle K.
Fostervold, Knut Inge
Thorud, Hanne Mari S.
Funding for this research was provided by:
EkstraStiftelsen Helse og Rehabilitering (2011/2/0036)
Article History
Received: 6 October 2017
Accepted: 22 May 2018
First Online: 30 May 2018
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.
: The study protocol was approved by the Regional Committee for Medical and Health Research Ethics, Norway (2013/610), and followed the tenets of the 1964 Helsinki declaration and its later amendments or comparable ethical standards. The funding bodies from the Norwegian Extra Foundation for Health and Rehabilitation/Spine Association, Norway, had no impact on the study: on either design, data collection, analysis or presentation of the results.
: All participants received verbal and written information about the study, and informed consent was obtained from all individual participants included. Additional informed consent was obtained from all individual participants for whom identifying information is included in this article.