Funding for this research was provided by:
Received: 7 June 2021
Accepted: 2 February 2022
First Online: 12 February 2022
Ethics approval and consent to participate
: The study did not require ethical approval as the form of the study was opinion seeking for the purpose of market research, with the subject matter limited to topics that are strictly within the professional competence of the participants. All methods were performed in accordance with the national guidelines for ethics in research for Germany, as outlined here: ExternalRef removed (the summary in English is available here: ExternalRef removed). In addition, no vulnerable groups were included, the data were completely anonymous, there was no risk of disclosure, and the data collected were not sensitive in nature.
: The authors declare that they have no competing interests.