Merkel, Susanne https://orcid.org/0000-0003-2676-9486
Weber, Klaus
Brunner, Maximilian
Baecker, Justus
Agaimy, Abbas
Göhl, Jonas
Hohenberger, Werner
Schellerer, Vera
Grützmann, Robert
Article History
Accepted: 30 November 2018
First Online: 4 December 2018
Compliance with ethical standards
: According to the ethics committee, written consent was not necessary for this retrospective analysis. All clinical data were analyzed anonymously.
: The authors declare that they have no conflict of interest.