Ehrenreich, Philipp
Birkhold, Susanne T.
Zimmermann, Eugen
Hu, Hao
Kim, Kwang-Dae
Weickert, Jonas
Pfadler, Thomas
Schmidt-Mende, Lukas
Article History
Received: 18 April 2016
Accepted: 9 August 2016
First Online: 1 September 2016
Competing interests
: The authors declare no competing financial interests.