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Authors
Gehlen, Martin https://orcid.org/0000-0002-3000-5836
Lazarescu, Ana Doina
Hinz, Christian
Schwarz-Eywill, Michael
Pfeifer, Michael
Balasingam, Subathira
Maier, Anna
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Article History
Received: 11 June 2019
Revised: 16 August 2019
Accepted: 20 August 2019
First Online: 29 August 2019
Compliance with ethical standards
:
: Martin Gehlen, Ana Doina Lazarescu, Christian Hinz, Michael Schwarz-Eywill, Michael Pfeifer, Subathira Balasingam and Anna Maier declare that they have no conflict of interest. The authors declare no competing financial interests.
: Informed consent was obtained from all participants included in the study.
: Retrospective study. For this type of study, formal consent is not required.
