Wienzek-Lischka, Sandra http://orcid.org/0000-0002-6403-0714
Sawazki, Angelika
Ehrhardt, Harald
Sachs, Ulrich J.
Axt-Fliedner, Roland
Bein, Gregor
Article History
Received: 22 November 2019
Accepted: 26 May 2020
First Online: 4 June 2020
Compliance with ethical standards
:
: Sandra Wienzek-Lischka declares that she has no conflict of interest. Angelika Sawazki declares that she has no conflict of interest. Harald Ehrhardt declares that he has no conflict of interest. Ulrich J. Sachs declares that he has no conflict of interest. Roland Axt-Fliedner declares that he has no conflict of interest. Gregor Bein declares that he has no conflict of interest.
: The Ethical Committee of the Medical Faculty of the Justus-Liebig-University, Giessen, Germany, approved this retrospective study on 21th April 2017 (Votum No. 63/17).
: Our retrospective study based on data of medical records and requires only the approval of the Ethical Committee of the Medical Faculty and no informed consent.