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Authors
Wang, Qiao
Peng, Hongling
Zhao, Xia
Qi, Xiaorong
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Article History
Received: 31 January 2021
Accepted: 30 April 2021
First Online: 10 May 2021
Declarations
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: The experimental protocol was established, according to the ethical guidelines of Helsinki Declaration and was approved by Medical ethics committee of West China Second Hospital of Sichuan University, No 175. Written informed consent was obtained from individual or guardian participants.
: Not applicable.
: We declare that we have read and understood the BMC Group policy on declaration of interests and have no relevant interests to declare.
