Lichtenthäler, Luisa C.
Pussin, Andreas M.
Aach, Mirko
Grasmücke, Dennis
Schildhauer, Thomas A.
Schmiegel, Wolff
Brechmann, Thorsten http://orcid.org/0000-0002-9641-4763
Article History
Received: 20 June 2022
Revised: 29 April 2023
Accepted: 5 May 2023
First Online: 25 May 2023
Ethics approval
: The study protocol was approved by the institutional review board of the Ruhr University Bochum [registry number 18-6351] on the basis of the ethical guidelines of the Declaration of Helsinki and its later revisions; informed consent was obtained from all patients before surgery. Informed consent was neither practicable nor necessary for this retrospective study and was exempted by the institutional review board.
: The authors declare no competing interests.