Funding for this research was provided by:
Deutsche Forschungsgemeinschaft (374688875)
Friedrich-Alexander-Universität Erlangen-Nürnberg
Article History
Received: 17 January 2021
Accepted: 21 June 2021
First Online: 14 July 2021
Conflict of interest
: A. Jobst, D. Floros, P. Steinmann and M. Merklein declare that they have no competing interests.