Funding for this research was provided by:
Radiumhospitalets Forskningsstifltelse (335007)
Received: 5 June 2019
Accepted: 15 October 2019
First Online: 3 December 2019
Ethics approval and consent to participate
: All participants have given an informed consent. This study was approved by Regional Ethical Committee (REC) south east D, reference 2015/1332.
: Not applicable.
: The authors declare that they have no competing interests.