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Authors
Yang, Ya
Hu, Xiaogang
Xiong, Lirong
Fu, Peishu
Feng, Wei
Li, Wei
Zhang, Liwen
Sun, Fengjun
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Article History
Received: 28 August 2020
Accepted: 28 January 2021
First Online: 3 February 2021
Ethics approval and consent to participate
: This study was conducted following the Declaration of Helsinki. It was approved by the Ethics Commission of Chongqing Public Health Medical Center (ethics approval registration number:2020–043-01-KY) and written informed consent was waived in consideration of the emergency of infectious disease.
: Not applicable.
: The authors declare that they have no competing interests.
