Funding for this research was provided by:
Ministry of Science and Technology, Taiwan (MOST 108-2314-B-532-007-MY2)
National Institute for Health Research (NHRI-EX108-10818PI)
Taipei City Department of Health (10901-62-008)
Received: 3 August 2020
Accepted: 7 April 2021
First Online: 5 May 2021
: The authors declare that they have no conflict of interest.
: The study was conducted in accordance with the Declaration of Helsinki’s standards and its later amendments. Ethics-committee approval was waived because all data were anonymous and publicly available.