Schmalz, Gerhard http://orcid.org/0000-0002-6602-377X
Patschan, Susann
Patschan, Daniel
Ziebolz, Dirk
Article History
Received: 30 January 2020
Accepted: 21 April 2020
First Online: 29 April 2020
Ethics approval and consent to participate
: Not applicable.
: Not applicable.
: The authors declare that they have no competing interests.