Haimerl, Michael
Verloh, Niklas
Zeman, Florian
Fellner, Claudia
Nickel, Dominik
Lang, Sven A.
Teufel, Andreas
Stroszczynski, Christian
Wiggermann, Philipp
Article History
Received: 13 September 2016
Accepted: 24 January 2017
First Online: 7 March 2017
Competing interests
: The authors declare no competing financial interests.