Funding for this research was provided by:
Bundesministerium für Bildung und Forschung (01EC1009)
Text and Data Mining valid from 2019-01-14
Received: 11 May 2018
Accepted: 7 December 2018
First Online: 14 January 2019
Ethics approval and consent to participate
: Ethic approval was given by the ethics committee of the Heinrich-Heine University of Düsseldorf (reference number 3483) and the Charité Berlin (EA1/193/10). Written informed consent was obtained from all patients before enrollment.
: All authors read, revised, and approved the final manuscript.
: The authors declare that they have no competing interests.
: Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.