Hennig, Georg
Homann, Christian
Teksan, Ilknur
Hasbargen, Uwe
Hasmüller, Stephan
Holdt, Lesca M.
Khaled, Nadia
Sroka, Ronald
Stauch, Thomas
Stepp, Herbert
Vogeser, Michael
Brittenham, Gary M.
Article History
Received: 2 July 2015
Accepted: 18 January 2016
First Online: 17 February 2016
Competing interests
: The authors declare no competing financial interests.