Funding for this research was provided by:
Gemeinsame Bundesausschuss (01NVF17028)
Received: 3 November 2020
Accepted: 12 November 2020
First Online: 20 November 2020
Ethics approval and consent to participate
: All procedures performed in studies involving human participants will be in accordance with the ethical standards of the institutional and/or national research committees and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards. Project staff will obtain written informed consent from the participants. Ethical approval for this study was obtained from the Ethics Committee of the Medical Chamber Hamburg (PV 5749).
: Not applicable.
: All authors declare that there are no competing interests.