Funding for this research was provided by:
Lions Cancer Foundation Uppsala (NA)
Received: 22 November 2018
Accepted: 16 July 2019
First Online: 29 July 2019
Ethics approval and consent to participate
: The study was performed in accordance with the Swedish Biobank Legislation and was approved by the Uppsala University Ethical Review Board (2014/501). The need for informed consent was waived by the aforementioned authorities due to that a sizeable portion of the patients were already deceased. Individual patient data has not been made available and the dataset has been handled anonymized.
: Not applicable.
: The authors declare that they have no competing interests.