Received: 20 November 2018
Accepted: 26 June 2019
First Online: 1 July 2019
Ethics approval and consent to participate
: An application for ethics approval was submitted to the ethics committee of the University of Bremen. After evaluating the study protocol, the review board waived the need for an ethics approval. All participants gave informed and written consent for participation in the study and for audio recordings during the conference.
: Not applicable.
: JK is an employee of the medical device company Newsenselab. His contribution to this project was predominantly made during his tenure as a research assistant at the University of Bremen. All authors declare that they have no competing interests.