Beutner, Andrea
Piendl, Sebastian Karl
Wert, Stefan
Matysik, Frank-Michael
Article History
Received: 5 March 2018
Revised: 11 June 2018
Accepted: 2 July 2018
First Online: 19 July 2018
Compliance with ethical standards
: This article does not contain any studies with human participants or animals.
: The authors declare that they have no conflict of interests.