Funding for this research was provided by:
Bundesministerium für Bildung und Forschung (13GW0388A)
Received: 13 January 2021
Accepted: 8 April 2021
First Online: 2 May 2021
: The authors declare that they have no conflict of interest.
: Ethical approval for this study was obtained from the ethics committee II of the Medical Faculty Mannheim, Heidelberg University (2016-863R-MA).
: We are in compliance with ethical standards.