Grund, Christian Karl http://orcid.org/0000-0002-2030-9190
Tulis, Maria
Article History
First Online: 27 September 2019
Compliance with ethical standards
:
: The authors would like to state that there is no conflict of interest and that this research did not receive any specific grant from funding agencies in the public, commercial, or not-for-profit sectors.
: Ethical considerations have been taken into account, participants have been protected and had no disadvantages in any form.