Funding for this research was provided by:
Norges Forskningsråd (260355)
EkstraStiftelsen Helse og Rehabilitering (Stiftelsen Dam) (2016/FO76041)
Received: 16 April 2019
Accepted: 30 April 2019
First Online: 10 June 2019
Ethics approval and consent to participate
: The trial protocol was approved by the Regional Ethics Committee South/East Norway in April 2017 (ref nr: 2017/358). Informed written consent to participate in this study will be obtained from all participants as a condition of enrolment, as described in this manuscript.
: Not applicable.
: The authors declare that they have no competing interests.
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