Zhao, Lin
Wang, Hai-Tao
Ye, Run-Ze
Li, Zhen-Wei
Wang, Wen-Jing
Wei, Jia-Te
Du, Wan-Yu
Yin, Chao-Nan
Wang, Shan-Shan
Liu, Jin-Yue
Ji, Xiao-Kang
Wang, Yong-Chao
Cui, Xiao-Ming
Liu, Xue-Yuan
Li, Chun-Yu
Qi, Chang
Liu, Li-Li
Li, Xiu-Jun
Xue, Fu-Zhong
Cao, Wu-Chun
Funding for this research was provided by:
National Natural Science Foundation of China (82103897, 81621005)
Natural Science Foundation of Shandong Province, China (ZR2020QH299)
Open Project Program of the State Key Laboratory of Pathogen and Biosecurity (SKLPB2133)
Spatiotemporal Epidemiology of COVID-19 (2020SFXGFY02-2)
Article History
Received: 29 August 2021
Accepted: 24 March 2022
First Online: 4 April 2022
Declarations
:
: This study complied with the declaration of Helsinki and all methods were performed in accordance with the relevant guidelines and regulations of the Ethics Committee of the School of Public Health, Shandong University (No.20190401). Informed consent was waived owing to the retrospective nature of the study.
: Not applicable.
: The authors declare that they have no competing interests.