Funding for this research was provided by:
National Natural Science Foundation of China (81773743)
Natural Science Foundation of Jiangsu Province (BK20150590)
Text and Data Mining valid from 2019-12-01
Received: 19 April 2019
Accepted: 12 December 2019
First Online: 21 December 2019
Ethics approval and consent to participate
: The experimental processes including the protocols in this study were approved by the medical ethical committee of Nanjing University.
: Not applicable.
: The authors declare that they have no competing interests.