Szczepek, Michal
Beyrière, Florent
Hofmann, Klaus Peter
Elgeti, Matthias
Kazmin, Roman
Rose, Alexander
Bartl, Franz J.
von Stetten, David
Heck, Martin
Sommer, Martha E.
Hildebrand, Peter W.
Scheerer, Patrick
Article History
Received: 26 May 2014
Accepted: 24 July 2014
First Online: 10 September 2014
Competing interests
: The authors declare no competing financial interests.