Received: 3 September 2020
Accepted: 8 November 2020
First Online: 23 November 2020
Ethics approval and consent to participate
: Ethical approval was obtained from the ethical review committee of the Ludwig-Maximilians-Universität (registration number 18-578). Written informed consent was given in line with the vote of the ethics committee before enrolment.
: Not applicable.
: Upon manuscript submission, all authors declare they have no competing interests.