Scheichel, Florian
Marhold, Franz http://orcid.org/0000-0001-8338-8060
Pinggera, Daniel
Kiesel, Barbara
Rossmann, Tobias
Popadic, Branko
Woehrer, Adelheid
Weber, Michael
Kitzwoegerer, Melitta
Geissler, Klaus
Dopita, Astrid
Oberndorfer, Stefan
Pfisterer, Wolfgang
Freyschlag, Christian F.
Widhalm, Georg
Ungersboeck, Karl
Roessler, Karl
Funding for this research was provided by:
Open Access Publishing Fund of Karl Landsteiner University of Health Sciences, Krems, Austria
Article History
Received: 11 November 2020
Accepted: 15 June 2021
First Online: 29 June 2021
Declarations
:
: This retrospective study was approved by the Ethics Committee of Niederoesterreich (University Hospital of St. Poelten, approval no.: GS4-EK-4/558–2018), the Ethics Committee of the Medical University of Vienna (Medical University of Vienna, approval no.: EK419/2008) and the Ethics Committee of Vienna (Donauspital SMZ Ost, approval no.: EK 18–265-VK). The Institutional Review Board of the Medical University of Innsbruck waived the requirement for Ethics approval due to the retrospective design. The study was conducted in accordance with the ethical standards of each institutional and national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.
: Not applicable.
: The authors have no conflicts of interest to declare that are relevant to the content of this article.