Funding for this research was provided by:
CAMS Innovation Fund for Medical Sciences (No. 2016-I2M-1-011)
Received: 3 February 2019
Accepted: 15 May 2019
First Online: 22 May 2019
Ethics approval and consent to participate
: All animal experiments were approved by the Ethics Committee for Animal Experiments of the Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences (IMBF20060302). The study protocols comply with the recommendations in the Regulation for the Management of Laboratory Animals of the Ministry of Science and Technology of China.
: Not applicable.
: The authors declare that they have no competing interests.