Funding for this research was provided by:
RWTH Aachen University
Received: 21 September 2021
Accepted: 9 December 2021
First Online: 18 December 2021
: All the participants voluntarily participated in this study and provided written informed consent. The Ethics-Commission of the Medical Faculty RWTH Aachen University approved this study (EK 151/21).
: Not applicable in general.
: The authors declare that they have no competing interests.