Funding for this research was provided by:
Otto von Guericke University Magdeburg
Received: 20 January 2021
Accepted: 18 May 2021
First Online: 7 June 2021
: This study was approved by the local ethics-committee of the Friedrich Schiller University Jena (FSV 20/052). All participants gave written informed consent to participate in the experiments according to the principles stated in the declaration of Helsinki.
: Not applicable.
: The authors declare that they have no competing interests.