Funding for this research was provided by:
Swiss Cancer League (4592-08-2018, 02224-03-2008)
Krebsforschung Schweiz (4012-08-2016, 3515-08-2014, 3049-08-2012)
Swiss Federal Office of Public Health (08.001616)
Swiss National Science Foundation (320030_176218, PZ00P3_147987)
Received: 20 January 2020
Accepted: 11 April 2020
First Online: 17 April 2020
Ethics approval and consent to participate
: Ethics approval was granted through the Ethics Committee of the Canton of Bern to the SCCR on the 22th of July 2014 (KEK-BE: 166/2014).
: Not applicable
: The authors declare that they have no competing interests.