Funding for this research was provided by:
Norwegian Fund for Post-Graduate Training in Physiotherapy
Received: 16 December 2019
Accepted: 14 April 2020
First Online: 27 May 2020
Ethics approval and consent to participate
: This study was approved by the Regional committees for medical and health research ethics (REC South East) (2018/1191 C) and was carried out in accordance with the Helsinki Declaration. Written informed consent was obtained from all participants.
: Not applicable.
: The authors declare that they have no competing interests.