Haimerl, Michael
Utpatel, Kirsten
Verloh, Niklas
Zeman, Florian
Fellner, Claudia
Nickel, Dominik
Teufel, Andreas
Fichtner-Feigl, Stefan
Evert, Matthias
Stroszczynski, Christian
Wiggermann, Philipp
Article History
Received: 16 September 2016
Accepted: 19 December 2016
First Online: 27 January 2017
Competing interests
: The authors declare no competing financial interests.