Abendroth, A.
Noureddine, R.
Abramczyk, M.
Paul, A.
Gerken, G.
Schmid, K. W.
Markus, P.
Schumacher, B.
Wiesweg, M.
Köhler, J.
Markus, M.
Mende, B.
Dechêne, A.
Schuler, M.
Kasper, S.
Article History
Received: 10 May 2018
Accepted: 8 November 2018
First Online: 14 November 2018
Compliance with ethical standards
:
: All authors declare that there are no conflicts of interest in relation to this study.
: All procedures performed in this study were in accordance with the ethical standards of the institutional research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.
: A retrospective study does not allow the retrospective obtaining of patient´s informed consent (ICF) from deceased patients. Against this background, the study was approved by the local Ethics Committee of the Medical Faculty of the University Duisburg-Essen (No. 15-6497).