Doll, Kathrin
Rückel, Anton
Kämpf, Peter
Wende, Maximilian
Weuster-Botz, Dirk
Funding for this research was provided by:
Bundesministerium für Bildung und Forschung (031A468 C)
Article History
Received: 30 April 2018
Accepted: 8 June 2018
First Online: 3 July 2018
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.