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Authors
Bordne, Saskia https://orcid.org/0000-0002-9040-6383
Rietz, Christian
Schulz, Ralf-Joachim
Zank, Susanne
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Article History
Received: 8 May 2019
Accepted: 4 September 2019
First Online: 16 September 2019
Compliance with ethical standards
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: On behalf of all authors, the corresponding author states that there is no conflict of interest.
: All procedures performed in this study involving human participants were in accordance with the ethical standards of the Ethical Committee of the Medical Faculty of the University of Cologne, Germany, and with the 1964 Declaration of Helsinki and its later amendments and the study protocol was approved by the Ethical Committee of the Medical Faculty of the University of Cologne, Germany [no.17-187]. This article does not contain any studies with animals performed by any of the authors.
: Informed consent was obtained from all individual participants included in the study.
