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Authors
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Funding
Funding for this research was provided by:
the National Natural Science Foundation of China (No. 71661167005)
the Key Research and Development Program of Sichuan Province (No. 2018SZ0114, No. 2019YFS027)
the 1·3·5 Project for Disciplines of Excellence–Clinical Research Incubation Project, West China Hospital, Sichuan University (Grant No. 2018HXFH023, ZYJC18013)
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Article History
Received: 17 December 2019
Accepted: 23 April 2020
First Online: 1 May 2020
Ethics approval and consent to participate
: This study was approved by the Health Information Center of Sichuan Province. Informed consent was waived because this research did not involve individual data.
: Not applicable. The study does not include details relating to an individual person.
: The authors declare that they have no competing interests.
