Karakhanova, S
Ryschich, E
Mosl, B
Harig, S
Jäger, D
Schmidt, J
Hartwig, W
Werner, J
Bazhin, A V
Article History
Revised: 26 January 2015
Accepted: 30 January 2015
First Online: 5 March 2015
Competing interests
: The authors declare no conflict of interest.