Funding for this research was provided by:
Universitätsklinikum Essen
Article History
Received: 20 October 2020
Accepted: 22 October 2020
First Online: 3 November 2020
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.
: All procedures performed in the studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki Declaration and its later amendments or comparable ethical standards.
: For this type of retrospective study formal consent is not required and all patient data was anonymized.