Funding for this research was provided by:
Albert-Ludwigs-Universität Freiburg im Breisgau
Received: 25 October 2020
Accepted: 15 January 2021
First Online: 17 February 2021
Ethics approval and consent to participate
: The study was performed according to the Declaration of Helsinki in its current form, it was approved by the local ethics committee of the University Medical Center of the University of Freiburg (ETK-FR #118/19) and all participants declared informed consent prior to enrollment.
: All authors agreed to the final version of this manuscript.
: There is no personal or any other relation which may pose a conflict of interest for any of the authors. All authors state that there is no other conflict of interest according to ICMJE.