Funding for this research was provided by:
Deutsche Krebshilfe (111365)
Text and Data Mining valid from 2019-03-25
Received: 8 November 2018
Accepted: 11 March 2019
First Online: 25 March 2019
Ethics approval and consent to participate
: This study was approved by the Ethics Committee of the Medical Faculty Heidelberg. Consent was waived considering the anonymous, observational, population-based, and registry-based nature. No individual patient data were reported.
: Not applicable.
: The authors declare that they have no competing interests.
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