Received: 28 August 2020
Accepted: 18 April 2021
First Online: 3 May 2021
: The need for ethics approval was waived by the Ethics Committee of Northwest and Central Switzerland (Project-ID: Req-2020-00449), since the survey complies with the general ethical principles for human research. Verbal informed consent to participate in the survey was obtained before the telephone interview and implicit consent was assumed when a participant completed and returned the web-based survey.
: Not applicable.
: We declare that we have no conflict of interest.