Funding for this research was provided by:
Kræftens Bekæmpelse (R134-A8421-15-S42)
Text and Data Mining valid from 2018-08-01
Received: 12 December 2017
Accepted: 18 June 2018
First Online: 1 August 2018
: The authors declare no competing interests.
: The study obtained ethical clearance from the Committee on Health Research Ethics in the Central Denmark Region (j.no. 142/2014).
: The datasets supporting the conclusions of this article are stored in a secured research database and may be available upon presentation of formal approval.
: This study was funded by the Central Denmark Region, the Committee for Quality Improvement and Continuing Medical Education (KEU) for general practice of the Central Denmark Region and the Danish Cancer Society. None of the funding bodies has been involved in designing the study or writing the article, nor in the collection, analyses and interpretation of data.
: This work is published under the standard license to publish agreement. After 12 months the work will become freely available and the license terms will switch to a Creative Commons Attribution 4.0 International (CC BY 4.0).