Funding for this research was provided by:
BMBF (CLIOMMICS (01ZX1309))
Text and Data Mining valid from 2018-06-11
Received: 26 February 2018
Accepted: 27 May 2018
First Online: 11 June 2018
Ethics approval and consent to participate
: All subjects provided written informed consent. Ethical approval was obtained from Ethics committee of medicine faculty, University of Heidelberg, Heidelberg, Germany.
: The authors declare that they have no competing interests.
: Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.