Sauer, T
Silling, G
Groth, C
Rosenow, F
Krug, U
Görlich, D
Evers, G
Albring, J
Besoke, R
Mesters, R M
Müller-Tidow, C
Kessler, T
Büchner, T
Berdel, W E
Stelljes, M
Article History
Received: 6 July 2014
Revised: 2 November 2014
Accepted: 22 November 2014
First Online: 19 January 2015
Competing interests
: The authors declare no conflict of interest.