Stratmann, Bernd
Engelbrecht, Britta
Espelage, Britta C.
Klusmeier, Nadine
Tiemann, Janina
Gawlowski, Thomas
Mattern, Yvonne
Eisenacher, Martin
Meyer, Helmut E.
Rabbani, Naila
Thornalley, Paul J.
Tschoepe, Diethelm
Poschmann, Gereon
Stühler, Kai
Article History
Received: 9 October 2015
Accepted: 1 November 2016
First Online: 29 November 2016
Competing interests
: The authors declare no competing financial interests.