Received: 30 May 2020
Accepted: 7 October 2020
First Online: 18 November 2020
Ethics approval and consent to participate
: The requirement for ethical approval was waived following review by the Ethical commission of the Medical Faculty of Würzburg, Germany (ID: 20171024 01).
: Not applicable.
: The authors declare that there is no conflict of interest regarding the publication of this paper.