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Article History

Received: 31 March 2021

Accepted: 27 August 2021

First Online: 26 October 2021

Declarations

:

: The study was performed in accordance with the declaration of Helsinki. All procedures were approved by the Friedrich-Alexander Universität of Erlangen-Nürnberg Ethics Committee (Ref. 360_16 B). Participation was voluntary, and participants were free to leave the study at any time. Written informed consent was obtained from all participants.

: Not applicable.

: The authors declare that they have no competing interests.