Rammelsberg, Peter
Pahle, Julia
Büsch, Christopher
Zenthöfer, Andreas
Article History
Received: 3 September 2019
Accepted: 29 June 2020
First Online: 9 July 2020
Ethics approval and consent to participate
: The study protocol was evaluated and approved by the local ethics committee of the University of Heidelberg (registration number: 229/2005). All participants were informed about the content and procedures of the study and gave written consent.
: Not applicable.
: The authors state that they have no financial or non-financial conflicts of interest regarding this research.