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Authors
Rao, Chenyi
Wang, Xinquan
Li, Minda
Zhou, Guofeng
Gu, Hongmei
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Article History
Received: 17 December 2019
Accepted: 17 March 2020
First Online: 28 April 2020
Ethics approval and consent to participate
: This study was approved by the Institutional Review Board of Zhongshan Hospital, Fudan University (approval number B2018–236) in accordance with the ethical guidelines of the Declaration of Helsinki. The committee waived the requirement for informed consent because it is a retrospective study.
: Not applicable.
: The authors declare that they have no competing interests.
