Kostev, Karel http://orcid.org/0000-0002-2124-7227
Article History
Received: 11 March 2019
Accepted: 21 March 2019
First Online: 27 March 2019
Compliance with ethical standards
:
: Karel Kostev declares that he has no conflicts of interest related to this article.
: German law allows the use of anonymous electronic medical records for research purposes under certain conditions. According to this legislation, it is not necessary to obtain informed consent from patients or approval from a medical ethics committee for this type of observational study that contains no directly identifiable data. Since patients were only queried as aggregates and no protected health information was available for queries, no IRB approval was required for the use of this database or the completion of this study.
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