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Authors
Zhu, Jingjing
Liu, Xiaohua
Zhang, Jinling
Li, Jun
Chen, Linli
Huang, Chen
Li, Jiong http://orcid.org/0000-0003-1125-026X
Yu, Yongfu http://orcid.org/0000-0003-4208-9480
Xu, Huilin http://orcid.org/0000-0003-2557-9752
Qin, Guoyou
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Article History
Received: 4 May 2021
Revised: 21 September 2021
Accepted: 11 October 2021
First Online: 25 October 2021
Competing interests
: The authors declare no competing interests
: The study was approved by the Institutional Review Board of center for disease control and prevention in Minhang District, Shanghai (NO: EC-P-2019-009). Informed consent from participants involved in the study was waived due to the fact that anonymized data compiled from electronic medical records was applied in the study.
