Funding for this research was provided by:
Technische Universität München
Received: 11 February 2021
Accepted: 14 April 2021
First Online: 24 April 2021
: Ethical approval was obtained from the Ethical Commission Board of the Technical University Munich (250/20 S). All respondents included in the analyses provided informed consent. Our research was performed in accordance with the Declaration of Helsinki.
: Not applicable.
: All authors declare no competing financial interests.