Günther, Moritz Philipp http://orcid.org/0000-0002-7707-5532
Lau, Steffen http://orcid.org/0000-0002-3175-3457
Kling, Sabine http://orcid.org/0000-0001-7202-7200
Sonnweber, Martina http://orcid.org/0000-0002-9280-3286
Habermeyer, Elmar http://orcid.org/0000-0003-2136-878X
Kirchebner, Johannes http://orcid.org/0000-0002-6072-9958
Article History
Received: 2 November 2020
Accepted: 7 March 2021
First Online: 13 March 2021
Declarations
:
: The study was reviewed and approved by the Cantonal Ethics committee of Zurich, Switzerland (Ref.-No. KEK-ZH-NR 2014-0480). This is a retrospective study. For this type of study, formal consent is not required. The authors assert that all the procedures contributing to this work comply with the ethical standards of the relevant national and institutional committees on human experimentation and with the Helsinki Declaration of 1975, as revised in 2008.
: Not applicable.
: The authors declare that they have no competing interests.