Grün, Arne http://orcid.org/0000-0002-3868-2719
Kawgan-Kagan, Michael
Kaul, David
Badakhshi, Harun
Stromberger, Carmen
Budach, Volker
Böhmer, Dirk
Article History
Received: 22 February 2018
Accepted: 31 October 2018
First Online: 15 November 2018
Conflict of interest
: A. Grün, M. Kawgan-Kagan, D. Kaul, H. Badakhshi, C. Stromberger, V. Budach, and D. Böhmer declare that they have no competing interests.