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Authors
Xu, Gang
Cai, Jiageng
Liu, Zhaohong
Liu, Enzhao
Jing, Xiangyang
Liu, Tong
Zhang, Qitong
Ye, Lan
Li, Guangping
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Article History
Received: 26 December 2019
Accepted: 2 March 2020
First Online: 19 March 2020
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.
: All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional (medical ethics committee of Second Hospital of Tianjin Medical University, KL2019K013) and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.
