Funding for this research was provided by:
Received: 27 November 2018
Accepted: 20 September 2019
First Online: 17 October 2019
Ethics approval and consent to participate
: The use of screening data and tumor-related information was approved by the Danish Data Inspection Agency (2001-41-6191) and (2013-41-1604).
: Not applicable.
: The authors declare that they have no competing interests.