Wolf, Stefan
Zwickel, Heiner http://orcid.org/0000-0002-4712-3548
Hartmann, Wladislaw
Lauermann, Matthias
Kutuvantavida, Yasar
Kieninger, Clemens
Altenhain, Lars
Schmid, Rolf
Luo, Jingdong http://orcid.org/0000-0001-9990-2618
Jen, Alex K.-Y. http://orcid.org/0000-0002-9219-7749
Randel, Sebastian
Freude, Wolfgang
Koos, Christian
Article History
Received: 5 October 2017
Accepted: 19 December 2017
First Online: 3 April 2018
Competing Interests
: The authors declare no competing interests.