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Authors
Peng, Wenxiu
Liu, Rongji
Zhang, Lejia
Fu, Qiang
Mei, Dan
Du, Xiaoli https://orcid.org/0000-0003-0308-6279
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Article History
Received: 10 April 2019
Accepted: 17 July 2019
First Online: 2 August 2019
Compliance with ethical standards
: The study protocol was approved by the institutional review board of PUMCH, and all patients were informed about the study and gave written consent prior to participation.
: The authors declare that they have no conflict of interest.
