Funding for this research was provided by:
the National Mega-Project for Innovative Drugs (2019ZX09735-002)
the Science and Technology Innovation Project of the Chinese Academy of Medical Sciences (2016-I2M-3-015)
Article History
Received: 21 November 2019
Accepted: 9 January 2020
First Online: 20 January 2020
Ethics approval and consent to participate
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: Not applicable.
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: The authors declare that they have no competing interests.