Hentschel, Florian http://orcid.org/0000-0003-2856-3940
Lüth, Stefan
Article History
Received: 26 September 2019
Accepted: 24 February 2020
First Online: 11 March 2020
Compliance with ethical standards
:
: All procedures performed in studies involving human participants were in accordance with the 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 retrospective type of study using anonymous data formal consent is not required. This study does not contain any experiments with animals performed by any of the authors.
: The authors declare no conflict of interest.
: All procedures followed were in accordance with the ethical standards of the responsible committee on human experimentation (institutional and national) and with the Helsinki Declaration of 1964 and later versions.
: Informed consent or substitute for it was obtained from all patients for being included in the study.