Wang, Yuan-yuan
Tian, Ting
Pan, Da
Zhang, Jing-xian
Xie, Wei
Wang, Shao-kang
Xia, Hui
Dai, Yue
Sun, Guiju
Article History
Received: 28 March 2021
Accepted: 16 June 2021
First Online: 25 June 2021
Declarations
:
: This study was conducted according to the guidelines laid down in the Declaration of Helsinki and all procedures involving research study participants were approved by the [Medical Ethics Committee of Jiangsu Provincial Center for Disease Control and Prevention]. Written informed consent was obtained from all subjects.
: Not applicable.
: The authors declare that they have no competing interests.