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Authors
Liu, Dafeng http://orcid.org/0000-0002-6792-641X
Zhang, Xinyi
Kang, Jun
Gao, Fengjiao
He, Yinsheng
He, Shenghua
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Funding
Funding for this research was provided by:
national science and technology program during the twelfth five-year plan period (2012ZX10001-003)
health department of sichuan province (130430, 17PJ070)
the chengdu municipal health commission (2019079)
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Article History
Received: 14 June 2021
Accepted: 3 November 2021
First Online: 18 November 2021
Declarations
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: The study was approved by the hospital ethics committee of the Public and Health Clinic Centre of Chengdu (PJ-K2012-012-01). All patients gave written informed consent.
: All of participants understand that the information will be published without their child or ward’s/their relative’s (circle as appropriate) name attached, but that full anonymity cannot be guaranteed. All of participants understand that the text and any pictures or videos published in the article will be freely available on the internet and may be seen by the general public. The pictures, videos and text may also appear on other websites or in print, may be translated into other languages or used for commercial purposes. All of participants have been offered the opportunity to read the manuscript.
: The authors declare that they have no competing interests.
