Hauser, Christoph
Richter, Tim
Homonnay, Nico
Eisenschmidt, Christian
Qaid, Mohammad
Deniz, Hakan
Hesse, Dietrich
Sawicki, Maciej
Ebbinghaus, Stefan G.
Schmidt, Georg
Article History
Received: 8 June 2015
Accepted: 16 December 2015
First Online: 10 February 2016
Competing interests
: The authors declare no competing financial interests.