Funding for this research was provided by:
National Natural Science Foundation of China (No. 81273010)
Scientific Research Subject of Health and Family Planning Commission of Hubei Province (No. WJ2017X30)
Received: 4 July 2017
Accepted: 10 January 2018
First Online: 18 January 2018
: The conduct and procedures involving animals were performed in strict accordance with the guidelines of the Association for Assessment and Accreditation of Laboratory Animal Care International. All the animal study protocols were approved by the Institutional Animal Care and Use Committee of Wuhan University.
: Not applicable.
: The authors declare that they have no competing interests.
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