Kaetzl, Korbinian
Lübken, Manfred
Nettmann, Edith
Krimmler, Stefan
Wichern, Marc
Funding for this research was provided by:
Bundesministerium für Bildung und Forschung, Germany (031A242-B, 031A242-B, 031A242-B, 031A242-B, 031A242-B)
Article History
Received: 19 August 2019
Accepted: 26 December 2019
First Online: 27 January 2020
Competing interests
: The authors declare no competing interests.