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Authors
Ji, Zhe
Jiang, Yuliang
Guo, Fuxin
Peng, Ran
Sun, Haitao
Fan, Jinghong
Xu, Fei
Wang, Junjie https://orcid.org/0000-0003-4087-6632
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Article History
Received: 16 June 2019
Accepted: 4 October 2019
First Online: 19 October 2019
Compliance with ethical standards
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: None of the authors have any conflicts of interest.
: All procedures performed in study involving human participants were in accordance with the ethical standards of the institutional and national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards. This retrospective study was approved by the Peking University Third Hospital Medical Science Research Ethics Committee and registered in the Chinese Clinical Trial Registry (ChiCTR) () with the registration number ChiCTR1800019945.
: Informed consent was obtained from all individual participants included in the study.
