Arnold, A.
Daum, S.
von Winterfeld, M.
Berg, E.
Hummel, M.
Rau, B.
Stein, U.
Treese, C. http://orcid.org/0000-0001-9120-6773
Article History
Received: 20 April 2020
Accepted: 9 May 2020
First Online: 1 June 2020
Compliance with ethical standards
:
: The author(s) declare that they have no conflict of interest.
: This study was approved by the Institutional Review Board of the Charité (EA4/115/10).
: Retrospective study, so no consent of participation is possible.
: Retrospective study, so no consent of participation is possible.