Funding for this research was provided by:
Received: 9 April 2021
Accepted: 11 August 2021
First Online: 31 August 2021
: The ethics committee of the Ludwig-Maximilians-University Munich approved the study (clinical sample [Project Number: 18–716]; non-clinical sample [Project Number: 20–118]) and the study was conducted in accordance with the Declaration of Helsinki (Association 2014). All participants provided informed consent prior to participation.
: Not applicable.
: The authors have no competing interests as defined by BMC, or other interests that might be perceived to influence the results and/or discussion reported in this paper.