Funding for this research was provided by:
Helse Sør-Øst RHF
Received: 24 December 2019
Accepted: 4 March 2020
First Online: 16 March 2020
Ethics approval and consent to participate
: Ethics approval has been granted by The Committee of Medical Ethics in Health Region South-Eastern Norway (REC South East, reference number 2017/2125) and by The Research Board at Oslo University Hospital, Norway. Standard informed written consent will be obtained from each participating patient. Participation in the study is completely voluntary. Participants can choose to withdraw from the study at any stage without further explanation.
: Not applicable.
: The authors declare that they have no competing interests.