Tiburtius, Christian http://orcid.org/0000-0002-8330-8646
Böthig, Ralf
Kowald, Birgitt
Hirschfeld, Sven
Thietje, Roland
Article History
Received: 12 January 2020
Accepted: 23 July 2020
First Online: 7 August 2020
Ethics approval and consent to participate
: The Institutional Review Board (IRB, Hauptgeschäftsführer der Berufsgenossenschaft für Gesundheitsdienst und Wohlfahrtspflege, Pappelallee 33, 22089 Hamburg) has approved the present study. A submission of the project was not requested. According to applicable law there was no permission to access and use of the medical records used in our study required.We certify that all applicable institutional and governmental regulations concerning the ethical use of human volunteers were followed during the course of this research.Since this is a retrospective study, no patient consent could be obtained in advance.Permission to collect the data was given by the department.
: Not applicable.
: The authors declare that they have no competing interests.