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Authors
Yun, Wang
Huijuan, Chen
Long, Liao
Xiaolong, Lu
Aihua, Zhang
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Funding
Funding for this research was provided by:
National Natural Science Foundation of China (81860591)
Doctor Initiation Fund of Guizhou Medical University ([2020]070)
Guizhou Provincial Science and Technology Projects (ZK[2022]-386)
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Article History
Received: 18 October 2021
Accepted: 20 May 2022
First Online: 7 June 2022
Declarations
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: This study was approved by the Ethics Committee of Guizhou Provincial Center for Disease Control and Prevention. Because this retrospective study analyzed routine surveillance data and only the anonymized data was used, the Ethics Committee of Guizhou Provincial Center for Disease Control and Prevention waived the need for informed consent. All methods were carried out in accordance with relevant guidelines and regulations.
: Not applicable.
: The authors declare that they have no competing interests.
