2.2 Study procedure All study procedures were conducted in accordance with the declaration of Helsinki (1975, revised in 2008; World Medical Association, 2009), and were approved by the local ethics committee (GZEK 2020-31). Before completion of the online survey, the participants were informed about their anonymity, the use of the data, and their right to withdraw from participation. Informed consent was signed via an opt-in procedure. All participants confirmed to be ≥18 years of age.