Funding for this research was provided by:
Universität des Saarlandes
Received: 28 May 2021
Accepted: 25 February 2022
First Online: 19 March 2022
: Both studies were approved by the Ethic Committee of Saarland University and all participants gave written informed consent according to the declaration of Helsinki and its latest revisions.
: Not applicable.
: The authors declare that they have no competing interests.