Domröse, Christian M.
Bremer, Sandra
Buczek, Caroline
Geipel, Annegret
Berg, Christoph
Hellmund, Astrid
Gembruch, Ulrich
Willruth, Arne
Article History
Received: 6 March 2018
Accepted: 6 September 2018
First Online: 14 September 2018
Compliance with ethical standards
:
: The authors declare that there are no conflicts of interest.
: All procedures were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards. This is a retrospective study of data routinely achieved and anonymously analyzed. Our local ethics committee (Ethikkommission an der Medizinischen Fakultät der Rheinischen Friedrich-Wilhelms-Universität Bonn) does not generate a protocol in this form of study but frees us from it. All findings were extracted from the medical records and stored in an anonymized data base.