Steiger, V R
Brühl, A B
Weidt, S
Delsignore, A
Rufer, M
Jäncke, L
Herwig, U
Hänggi, J
Article History
Received: 13 November 2015
Revised: 5 September 2016
Accepted: 11 October 2016
First Online: 6 December 2016
Competing interests
: The authors declare no conflict of interest.