Funding for this research was provided by:
National Natural Science Foundation of China (11472018)
Text and Data Mining valid from 2019-12-01
Received: 16 May 2019
Accepted: 26 November 2019
First Online: 30 December 2019
Ethics approval and consent to participate
: All experimental procedures were carried out in accordance with the Chinese Guidelines of Animal Care and Welfare, and the study was approved by the Animal Welfare Ethics Branch of the Peking University Bioethics Committee.
: Not applicable
: The authors declare that they have no competing interests.