Funding for this research was provided by:
Universität des Saarlandes
Received: 21 November 2020
Accepted: 7 March 2022
First Online: 18 March 2022
: This study was approved by the ethics committee of Ärztekammer des Saarlandes (Saarbrücken, Germany; #254/20).A waiver was obtained for the consent to participate in the study. This study was performed in accordance with the Declaration of Helsinki.
: Not applicable.
: The authors declare that they have no competing interests.