Bella, Simone Dalla
Benoit, Charles-Etienne
Farrugia, Nicolas
Keller, Peter E.
Obrig, Hellmuth
Mainka, Stefan
Kotz, Sonja A.
Article History
Received: 14 October 2015
Accepted: 5 January 2017
First Online: 24 February 2017
Competing interests
: The authors declare no competing financial interests.