Funding for this research was provided by:
Deutsche Forschungsgemeinschaft (KI1388-/7-1)
Article History
Received: 18 December 2017
Accepted: 2 January 2018
First Online: 18 January 2018
Compliance with ethical standards
:
: Edita Poljac declares that she has no conflict of interest. Andrea Kiesel declares that she has no conflict of interest. Iring Koch declares that he has no conflict of interest. Hermann Müller declares that he has no conflict of interest.
: This article does not contain any studies with human participants or animals performed by any of the authors.