Frikkel, J.
Götte, M. http://orcid.org/0000-0003-0841-8738
Beckmann, M.
Kasper, S. http://orcid.org/0000-0002-5947-8733
Hense, J. http://orcid.org/0000-0003-4679-2026
Teufel, M. http://orcid.org/0000-0003-2120-1840
Schuler, M. http://orcid.org/0000-0002-2166-3394
Tewes, M. http://orcid.org/0000-0001-8868-8329
Article History
Received: 10 October 2019
Accepted: 9 March 2020
First Online: 31 March 2020
Ethics approval and consent to participate
: All procedures performed in the study were in accordance with the ethical standards of the institutional and local ethical review committee of the University of Essen and were approved in May 2017 (Reference number: 17–7385-BO). Written informed consent was obtained from all individual participants included in the study.
: Not applicable.
: The authors declare that they have no competing interests.