Text and Data Mining valid from 2019-12-01
Received: 5 September 2019
Accepted: 29 November 2019
First Online: 5 December 2019
Ethics approval and consent to participate
: Approval for this study was obtained from the ethics committe of the Klinikum rechts der Isar, application code 400/16 S; Informed consent to participate in written form was obtained from all study participants.
: Was obtained from all authors.
: The authors declare that they have no competing interests.