Funding for this research was provided by:
Federal Joint Commitee (01NVF17034)
Received: 13 June 2020
Accepted: 4 November 2020
First Online: 17 November 2020
Ethics approval and consent to participate
: The study protocol has been approved by the Ethics Committees of the Universities Heidelberg and Tübingen, Germany, and follows the guidelines of the Declaration of Helsinki and current German and European Union legislation on data protection. The study participants sign the written informed consent form before randomization. Participation can be terminated at any time.
: Not applicable.
: The authors declare that they have no competing interests.