Text and Data Mining valid from 2020-03-24
Received: 21 August 2019
Accepted: 9 March 2020
First Online: 24 March 2020
Ethics approval and consent to participate
: This study was embedded into a greater cohort study and was approved by the ethics committee of the University of Heidelberg (approval number S 570/2015). All participants were informed about the study and provided signed informed consent to participate.
: Not applicable
: All authors were involved in the training program KWBW VerbundweiterbildungPLUS. All authors declare no further competing interests.