Funding for this research was provided by:
National Natural Science Foundation of China (NO:81371576)
Received: 31 August 2018
Accepted: 29 October 2018
First Online: 19 November 2018
Ethics approval and consent to participate
: All patients had given informed consent, and the study design was approved by the Ethical Review Board of Zhongshan Hospital of Fudan University and complied with the Declaration of Helsinki.
: Not applicable.
: The authors declare that they have no competing interests.
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