Funding for this research was provided by:
National Natural Science Foundation of China (51877046)
Jihua Laboratory Projects of Guangdong Province (18002U100)
Pioneering Project of Academy for Engineering and Technology of Fudan University (gyy2018-002)
Text and Data Mining valid from 2019-12-01
Received: 4 March 2019
Accepted: 12 December 2019
First Online: 26 December 2019
Ethics approval and consent to participate
: Not applicable.
: Both authors give their consent for publication.
: The authors declare that they have no competing interests.