von Lanzenauer, S H
Wolk, K
Höflich, C
Kunz, S
Grünberg, B H
Döcke, W-D
Reineke, U
Asadullah, K
Sterry, W
Volk, H-D
Sabat, R
Article History
Received: 2 October 2014
Accepted: 4 October 2014
First Online: 4 December 2014
Competing interests
: The authors declare no conflict of interest.