Funding for this research was provided by:
Bundesministerium für Gesundheit (1504-54401)
National Center for Tumor Diseases (G835)
Text and Data Mining valid from 2018-08-14
Received: 26 April 2018
Accepted: 18 July 2018
First Online: 14 August 2018
Ethics approval and consent to participate
: See attachment “Confirmation Approval” of the Ethics Committee of the University Hospital Heidelberg, Germany (Additional file InternalRef removed ).
: Not applicable.
: The authors declare that they have no competing interests.
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