Funding for this research was provided by:
Robert Bosch Stiftung (32.5.A381.0026.0)
Text and Data Mining valid from 2019-02-07
Received: 16 February 2018
Accepted: 29 January 2019
First Online: 7 February 2019
Ethics approval and consent to participate
: The project received ethics approval from the ethics committee of the medical faculty of the University Heidelberg (S-072/2017). Written consent to participate is obtained from all participants.
: Not applicable.
: The authors declare that they have no competing interests.
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