Received: 11 June 2019
Accepted: 16 December 2019
First Online: 23 December 2019
Ethics approval and consent to participate
: Written informed consent was provided by all individuals. An ethical statement for the DEAS study was not needed, as the criteria for it were not met (e.g., examination of patients, risk for the respondents, or the use of invasive methods).
: Not applicable.
: The authors declare that they have no competing interests.