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Authors
Liu, Chunhua
Lv, Haihong
Niu, Peng
Tan, Jiaojiao
Ma, Yuping
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Article History
Received: 27 May 2020
Accepted: 31 July 2020
First Online: 10 August 2020
Compliance with ethical standards
:
: None.
: Not applicable.
: No additional data are available.
: There was no patient and public involvement as this was a database research study.
: Not applicable.
