Funding for this research was provided by:
Shenzhen Science and Technology Innovation Commission (KQTD2015033117210153, KQTD2016112915000294, JCYJ20160229201759414, JCYJ20170413153329565)
National Natural Science Foundation of China (31500104, 31570115, 11504399, 31570095)
Shenzhen development and reform commission (No. 1194)
Text and Data Mining valid from 2019-03-08
Received: 15 August 2018
Accepted: 23 January 2019
First Online: 8 March 2019
Compliance with ethical standards
: The authors declare that they have no conflict of interest.
: This article does not contain any studies with human participants or animals performed by any of the authors.