Scherer, Kai
Braig, Eva
Willer, Konstantin
Willner, Marian
Fingerle, Alexander A.
Chabior, Michael
Herzen, Julia
Eiber, Matthias
Haller, Bernhard
Straub, Michael
Schneider, Heike
Rummeny, Ernst J.
Noël, Peter B.
Pfeiffer, Franz
Article History
Received: 2 November 2014
Accepted: 11 March 2015
First Online: 15 April 2015
Competing interests
: The authors declare no competing financial interests.