Funding for this research was provided by:
Taiwan Centers for Disease Control (DOH97-DC-2004)
Taiwan Centers for Disease Control (DOH98-DC-2012)
Taiwan Centers for Disease Control (DOH99-DC-2028)
Article History
Received: 3 December 2019
Accepted: 30 June 2020
First Online: 9 July 2020
Compliance with ethical standards
:
: The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.