Stamm, Tanja A.
Reichardt, Berthold
Zwerina, Jochen
Ritschl, Valentin
Nell-Duxneuner, Valerie
Article History
Received: 24 November 2017
Accepted: 17 January 2018
First Online: 14 February 2018
Conflict of interest
: T.A. Stamm, B. Reichardt, J. Zwerina, V. Ritschl, and V. Nell-Duxneuner declare that they have no competing interests.