Funding for this research was provided by:
Ministry of Science and Technology, R.O.C. (108-2314-B-002-165-MY3)
Mackay Medical College, R.O.C. (RD1080112)
Received: 10 January 2021
Accepted: 25 May 2021
First Online: 9 June 2021
: This study was approved by the National Taiwan University Research Ethics Committee (No. 201905HM137), and official written informed consent was obtained from each participant. No incentive was given to respondents.
: Not applicable.
: The authors declare that they have no competing interests.