Funding for this research was provided by:
the National Natural Science Foundation of China (81502254)
the Chinese Academy of Medical Sciences Initiative for Innovative Medicine (CAMS-2017-I2-1-002)
Text and Data Mining valid from 2018-08-02
Received: 6 May 2018
Accepted: 18 July 2018
First Online: 2 August 2018
Ethics approval and consent to participate
: Peking Union Medical College Hospital Human Research Ethics Committee Approval was obtained for the use of all samples.
: Not applicable.
: The authors declare that they have no competing interests.
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