Funding for this research was provided by:
Universität des Saarlandes
Received: 30 October 2020
Accepted: 23 June 2021
First Online: 3 July 2021
: The Ethics Committee of the Saarland Medical Council reviewed and approved the proposed study (Ref. No.: 133/11). The participants were informed about the study by telephone and that participation in it is voluntary. In addition, information was provided about the positive ethical vote on this survey. The declaration of consent was obtained orally and was confirmed by returning the questionnaire. Participants who did not want to participate in the study verbally refused the declaration of consent or did not return the questionnaire. The ethics committee did not ask for a written confirmation of participation. The ethics committee approved the method of obtaining consent.
: Not applicable.
: The authors declare no conflicts of interest.