Funding for this research was provided by:
Received: 2 April 2021
Accepted: 15 September 2021
First Online: 27 September 2021
: The ethics committee of the medical faculty of University Hospital Cologne approved the study on 2020/07/06 under the number 20-1155. The study is registered in the DRKS under the number 00020592.
: The declaration of consent obtained from the participants includes a statement that the results of the study will be pseudonymised or even rendered anonymous for publication. By agreeing to participate, the participants also agree to the publication of at least pseudonymised results. Data referring to individual persons, individual peer support groups or small-scale landscape areas will not be published in order to guarantee pseudonymisation.
: The authors declare that they have no competing interests.