Reiff, Tilman
Barthel, Oliver
Schönenberger, Silvia
Mundiyanapurath, Sibu http://orcid.org/0000-0003-4637-4641
Article History
Received: 2 September 2019
Accepted: 6 January 2020
First Online: 20 January 2020
Ethics approval and consent to participate
: The study was approved by the ethics committee of the University of Heidelberg, Germany (statement S-265/2018). The requirement for informed consent was waived due to the retrospective character of the analysis.
: Not applicable.
: The authors’ declare that they have no competing interests.