Seo, Jongcheol http://orcid.org/0000-0001-5844-4585
Hoffmann, Waldemar http://orcid.org/0000-0001-6757-3151
Warnke, Stephan
Huang, Xing
Gewinner, Sandy
Schöllkopf, Wieland http://orcid.org/0000-0003-0564-203X
Bowers, Michael T.
von Helden, Gert
Pagel, Kevin
Article History
Received: 26 November 2015
Accepted: 10 August 2016
First Online: 26 September 2016
Competing interests
: The authors declare no competing financial interests.