Bernstein, Ulrike
Kaiser, Thorsten
Stepan, Holger
Jank, Alexander http://orcid.org/0000-0001-8802-9358
Article History
Received: 7 October 2018
Accepted: 22 February 2019
First Online: 27 February 2019
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest relevant to this article.
: All procedures performed in studies involving human participants 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.
: Informed consent was obtained from all individual participants included in the study.