Sztajer, Helena
Szafranski, Szymon P
Tomasch, Jürgen
Reck, Michael
Nimtz, Manfred
Rohde, Manfred
Wagner-Döbler, Irene
Article History
Received: 20 November 2013
Revised: 27 March 2014
Accepted: 28 March 2014
First Online: 13 May 2014
Competing interests
: The authors declare no conflict of interest.