Ilic, Inja http://orcid.org/0000-0002-7840-8773
Schuss, Patrick
Borger, Valeri
Hadjiathanasiou, Alexis
Vatter, Hartmut
Fimmers, Rolf
Güresir, Erdem
Article History
Received: 20 December 2019
Accepted: 18 April 2020
First Online: 15 May 2020
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.
: All aspects of this study were approved by the ethics committee of the Rheinische Friedrich-Wilhelms-University, Bonn, Germany (No. 379/16). Due to the retroperspective character of the study, patient consent was not required. All procedures were in accordance with the ethical standards of the institutional and national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.