Article History
Received: 13 November 2018
Accepted: 24 January 2019
First Online: 2 February 2019
Ethics approval and consent to participate
: All patient samples and clinical data using were approved by the Ethics committee of the Peking University First Hospital and the exemption from informed consent was approved as well [Ethical approval No.: (2018) Research No. 147].
: Not applicable.
: The authors declare that they have no competing interest.
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