Liang, Jing
Jia, Ning
Zhang, Feiruo
HuadongZhang,
Ling, Ruijie
Liu, Yimin
Li, Gang
Li, Dongxia
Yin, Yan
Shao, Hua
Zhang, Hengdong
Qiu, Bing
Fang, Xinglin
Wang, Dayu
Zeng, Qiang
Chen, Jianchao
Zhang, Danying
Mei, Liangying
Liu, Yongquan
Liu, Jixiang
Zhang, Chengyun
Li, Tianlai
Li, Yu
Tao, Huaiying
Luo, Huan
Wang, Rugang
Wang, Zhongxu
Article History
Received: 15 May 2022
Accepted: 26 October 2022
First Online: 3 November 2022
Declarations
:
: This research protocol was approved by the Ethics Committee of Chinese Center for Disease Control and Prevention (Beijing, China) to commencing the study in accordance with relevant guidelines and regulations. Each questionnaire had attached an informative letter at first, which clarified the free participation, anonymity, and confidentiality of this study. Participants were informed on the research and signed an informed consent form.
: Not applicable.
: The authors declare that they have no competing interests.