Funding for this research was provided by:
Received: 19 May 2020
Accepted: 24 September 2020
First Online: 15 October 2020
Ethics approval and consent to participate
: The investigations were carried out in accordance with the ethical guidelines of the “Declaration of Helsinki” and its amendment in “Tokyo and Venice.” The ethics committee of the Medical School of Martin Luther University Halle-Wittenberg approved the study. All participants signed their written consent to participation in this study.
: All authors have given their consent for publication.
: The authors declare that they have no competing interests.