Trierweiler, C
Hockenjos, B
Zatloukal, K
Thimme, R
Blum, H E
Wagner, E F
Hasselblatt, P
Article History
Received: 16 January 2015
Revised: 21 July 2015
Accepted: 3 August 2015
First Online: 16 October 2015
Competing interests
: The authors declare no conflict of interest.