Bratzke, Daniel
Janczyk, Markus
Article History
Received: 16 April 2019
Accepted: 23 December 2019
First Online: 23 January 2020
Compliance with the ethical standards
:
: The authors declare that they have no conflict of interest.
: 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.