Westphalen, C. B. http://orcid.org/0000-0002-5310-3754
Preinfalk, A.
Kruger, S.
Haas, M.
Renz, B. W.
Riener, M.-O.
Weber, A.
Kirchner, T.
Werner, J.
Heinemann, V.
von Bergwelt-Baildon, M.
Baba, H. A.
Siveke, J. T.
Ormanns, S.
Boeck, S.
Article History
Received: 17 December 2018
Accepted: 21 December 2018
First Online: 3 January 2019
Compliance with ethical standards
:
: The authors declare no conflict of interest.
: This retrospective study was carried out according to the recommendations of local authorities, the local ethics committee of the Medical Faculty of the University of Munich (Approval Number 285-15) and of the Medical Faculty of the University Duisburg-Essen (Approval Number 13-5638-BO) and in accordance with the Declaration of Helsinki.
: For this study, participants provided informed consent when necessary.