Funding for this research was provided by:
Philipps-Universität Marburg
Article History
Received: 5 March 2019
Revised: 1 July 2021
Accepted: 3 July 2021
First Online: 17 November 2021
Compliance with 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 Declaration of Helsinki and its later amendments or comparable ethical standards.
: Informed consent was obtained from all individual participants included in the study.