Osmanovic, Alma
Rangnau, Isolde
Kosfeld, Anne
Abdulla, Susanne
Janssen, Claas
Auber, Bernd
Raab, Peter
Preller, Matthias
Petri, Susanne
Weber, Ruthild G
Article History
Received: 13 July 2016
Revised: 18 November 2016
Accepted: 24 November 2016
First Online: 4 January 2017
Competing interests
: The authors declare no conflict of interest.