Article History
Received: 10 February 2023
Accepted: 6 June 2023
First Online: 8 June 2023
Declarations
:
: This study analyzed secondary data and was approved by the Institutional Review Board of the Korea CDC (2014-06EXP-02-P-A). This study meets the Helsinki Declaration based ethical principles for medical research involving human subjects.
: Not applicable.
: The authors declare no competing interests.