Funding for this research was provided by:
Norges Teknisk-Naturvitenskapelige Universitet
Text and Data Mining valid from 2018-04-25
Received: 15 September 2017
Accepted: 4 April 2018
First Online: 25 April 2018
Ethics approval and consent to participate
: The current study was approved by the Regional Committee for Ethics in Medical Research (project no. 2017/540 REK midt, Norway) and carried out according to the Declaration of Helsinki. Written consent was obtained from all participants.
: Paul Jarle Mork is a member of the editorial board of BMC musculoskeletal.The authors declare that they have no competing interests.
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