Weinrebe, W.
Schiefer, Y.
Weckmüller, K.
Schulz, R. J.
Rupp, S.
Bischoff, S.
Karaman, M.
Goetz, S.
Heppner, H. J.
Polidori, M. C.
Article History
Received: 24 September 2018
Accepted: 14 December 2018
First Online: 8 January 2019
Compliance with ethical standards
:
: All the above listed authors have no conflicts of interest to report.
: The study was approved by the Ethics Committee of the University of Cologne as well as by the Ethics Committee of the Clinic Wartenberg.
: The authors declare agreement with the statement of human and animals rights.
: Being based on a retrospective data analysis there was no need for informed consent.