Törpel, Alexander http://orcid.org/0000-0002-3142-6819
Peter, Beate
Hamacher, Dennis http://orcid.org/0000-0002-5656-7669
Schega, Lutz http://orcid.org/0000-0003-0421-0796
Article History
Received: 26 July 2018
Accepted: 6 February 2019
First Online: 11 February 2019
Compliance with ethical standards
:
: None of the authors have any conflicts of interests.