Schäfer, Benjamin http://orcid.org/0000-0003-1607-9748
Beck, Christian
Aihara, Kazuyuki http://orcid.org/0000-0002-4602-9816
Witthaut, Dirk http://orcid.org/0000-0002-3623-5341
Timme, Marc
Article History
Received: 24 May 2017
Accepted: 10 November 2017
First Online: 8 January 2018
Competing interests
: The authors declare no competing financial interests.