Dietel, M
Jöhrens, K
Laffert, M V
Hummel, M
Bläker, H
Pfitzner, B M
Lehmann, A
Denkert, C
Darb-Esfahani, S
Lenze, D
Heppner, F L
Koch, A
Sers, C
Klauschen, F
Anagnostopoulos, I
Article History
Received: 8 May 2015
Revised: 31 July 2015
Accepted: 5 August 2015
First Online: 11 September 2015
Competing interests
: The authors declare no conflict of interest.