Funding for this research was provided by:
Received: 28 June 2021
Accepted: 2 December 2021
First Online: 15 December 2021
: All procedures performed involving human participants were in accordance with the ethical standards of the institutional and national research committee (Medical Center—University of Freiburg, EK-Nr. 68/17) and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.
: Not applicable.
: The authors declare that they have no competing interests.