Funding for this research was provided by:
Universitätsklinikum Düsseldorf. Anstalt öffentlichen Rechts
Received: 8 May 2021
Accepted: 20 July 2021
First Online: 25 August 2021
: The study was approved by the local ethical commission.
: All authors gave consent for the publication.
: The authors declare that they have no competing interests.