Funding for this research was provided by:
Kræftens Bekæmpelse (R131-A8487)
Text and Data Mining valid from 2020-02-11
Received: 8 April 2019
Accepted: 13 January 2020
First Online: 11 February 2020
Ethics approval and consent to participate
: According to Danish law, approval from the ethical committee was not required, but the study was registered with the Danish Data Protection Agency (1–16–02-60-17).
: Not applicable.
: The authors declare that they have no competing interests.