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Authors
Liu, Yan https://orcid.org/0000-0002-4000-1273
Zheng, Xingzheng https://orcid.org/0000-0001-8395-865X
Wang, Yuxiang https://orcid.org/0000-0003-4846-3859
Li, Yan https://orcid.org/0000-0002-1239-7047
Liu, Congrong https://orcid.org/0000-0002-7699-131X
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Funding
Funding for this research was provided by:
National Key Research and Development Program of China (2018YFC1004000)
Leading Academic Discipline Project of Beijing Education Bureau (BMU20110254)
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Article History
Received: 1 August 2019
Accepted: 3 December 2019
First Online: 12 December 2019
Compliance with ethical standards
: "The use of patient data for the present study has been approved by the local ethical committee. A written consent form was signed by each patient.
: The authors declare that they have no conflict of interest.
