Funding for this research was provided by:
Zentralinstitut für Seelische Gesundheit (ZI)
Article History
First Online: 3 August 2020
Compliance with ethical guidelines
:
: M. Schredl, K. Lüth, and J. Schmitt declare that they have no competing interests.
: 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.