Funding for this research was provided by:
Received: 25 March 2020
Accepted: 28 May 2020
First Online: 5 June 2020
Ethics approval and consent to participate
: The study received ethical approval from the Regional Ethical Committee of Stockholm (Dnr 2012/2008–31/4).
: A written informed consent was given by all participating patients, as well as a signed authorization to collect medical data on index patients, e.g. pathology report of the cancer and date of diagnosis.
: No part of these data have been sent or published elsewhere. The authors declare that they have no competing interests.