Hartung, Benno
Schwender, Holger
Roth, Eckhard H.
Hellen, Florence
Mindiashvili, Nona
Rickert, Annette
Ritz-Timme, Stefanie
Grieser, Almut
Monticelli, Fabio
Daldrup, Thomas
Article History
Received: 29 September 2015
Accepted: 15 December 2015
First Online: 6 January 2016
Compliance with ethical standards
:
: The experiments of this study comply with the current German laws. The study protocol was pre-approved by the ethics committee of the University Hospital DĂĽsseldorf.
: The authors declare that they have no competing interests.