Funding for this research was provided by:
Received: 29 June 2021
Accepted: 15 February 2022
First Online: 22 February 2022
: The initial study was conducted according to the guidelines laid down in the Declaration of Helsinki, and all procedures involving research study participants were approved by the Thai Ministry of Health and Mahidol University [CitationRef removed]. Verbal informed consent was obtained from all subjects. Verbal consent was witnessed and formally recorded. Participation was voluntary, and the participants were told that they could leave the interview at any time. The current study was further approved by the ethics committee for Research in Human Subjects, Faculty of Medicine, Siriraj Hospital, Mahidol University, Thailand (COA Si 076- 2021).
: Not applicable.
: The authors declare that they have no competing interests.