Stichnoth, Desiree
Kölle, Patrick
Kimbrough, Thomas J.
Riedle, Eberhard
de Vivie-Riedle, Regina
Trauner, Dirk
Article History
Received: 12 August 2014
Accepted: 17 October 2014
First Online: 3 December 2014
Competing interests
: The authors declare no competing financial interests.