Artzner, Christoph
Mossakowski, Oliver
Hefferman, Gerald
Grosse, Ulrich
Hoffmann, Rüdiger
Forschner, Andrea
Eigentler, Thomas
Syha, Roland
Grözinger, Gerd
Article History
Received: 14 March 2019
Accepted: 20 May 2019
First Online: 30 May 2019
Ethics approval and consent to participate
: This was a HIPAA compliant, IRB approved, retrospective study with waiver of informed consent.
: Not applicable due to retrospective character of the study with full anonymization and waiver of informed consent by local IRB.
: The authors declare that they have no competing interests.