Weinberger, Sarah
Klarholz-Pevere, Carola
Liefeldt, Lutz
Baeder, Michael
Steckhan, Nico
Friedersdorff, Frank
Article History
Received: 15 October 2017
Accepted: 16 March 2018
First Online: 22 March 2018
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.
: No human participants or animals were involved into this study.
: Because of the retrospective analysis no informed consent were needed.