Funding for this research was provided by:
Bundesministerium für Gesundheit (ZMVI5-2515KIG002)
Bundesministerium für Bildung und Forschung (01PD14003A)
Received: 19 May 2020
Accepted: 2 September 2020
First Online: 23 November 2020
Ethics approval and consent to participate
: There are positive ethics votes by the Ethics Commission of the Medical Faculty of the University of Ulm for the research design and the surveys of the projects. All participants voluntarily took part in the survey and explicitly agreed to participate.
: All participants have given their consent to the publication of the evaluation data.
: The authors declare that they have no competing interests regarding to this publication.