Schlegel, P
Feuchtinger, T
Nitschke-Gérard, C
Eva Seidel, U J
Lang, A-M
Kyzirakos, C
Teltschik, H-M
Ebinger, M
Schumm, M
Koscielniak, E
Handgretinger, R
Lang, P
Article History
First Online: 3 June 2015
Competing interests
: The authors declare no conflict of interest.