Funding for this research was provided by:
Faculty of Medicine, Prince of Songkla University, Thailand. (none)
Received: 21 January 2021
Accepted: 17 May 2021
First Online: 23 June 2021
: The authors declare no conflicts of interest with respect to the research, authorship, and/or publication of this article.
: The Ethics Committee of the Faculty of Medicine, Prince of Songkla University approved this study (REC: 63-099-03-4). Adhering to the policy of strict confidentiality, the signatures of participants were required, but personal identifiers were removed before data analysis, and all of the participants retained the right to withdraw from the study at any time. We confirm that all methods were carried out in accordance with relevant guidelines and regulations in the Ethical Declaration. We also confirm that informed consent was obtained from all participants.
: Not applicable.
: The authors declare that they have no conflicts of interest.