Funding for this research was provided by:
Bundesministerium für Bildung und Forschung (031L0076A)
Deutsche Krebshilfe (DKH 70113869)
Text and Data Mining valid from 2020-03-18
Received: 31 July 2019
Accepted: 11 February 2020
First Online: 18 March 2020
Ethics approval and consent to participate
: The study was conducted in accordance with the Declaration of Helsinki and was approved by the Ethics Committee Heidelberg (University of Heidelberg, Germany; S-206/2011; S-356/2013) and by the Ethics Committee Ulm (Ulm University; 130/2002). Samples were taken after patients gave their written informed consent.
: Not applicable.
: The authors declare that they have no competing interests.