Wang, Suting
Wang, Changyin
Liu, Xiaodong
Liu, Yao
Xiong, Ping
Tao, Zexin
Chen, Meng
Xu, Qing
Zhang, Li
Xu, Aiqiang
Article History
Received: 29 November 2021
Accepted: 15 March 2022
First Online: 14 April 2022
Declarations
:
: All protocols for this study were reviewed and approved by Ethics Review Committee of the Shandong Center for Disease Control and Prevention (No.2021–6), and the study was carried out in accordance with the principles of the Declaration of Helsinki. Written informed consents for the use of their clinical samples were obtained from all subjects (the legal guardians of the patients and contacts).
: Not applicable.
: The authors declare that they have no competing interests.