Benner, Peter http://orcid.org/0000-0003-3362-4103
Himpe, Christian http://orcid.org/0000-0003-2194-6754
Funding for this research was provided by:
Bundesministerium für Wirtschaft und Technologie (0324019B)
Article History
Received: 21 September 2018
Accepted: 4 September 2019
First Online: 19 November 2019
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.