Funding for this research was provided by:
National Natural Science Foundation of China (No. 81572045, No. 81273138)
Yunnan health training project of high level talents (Grant NumbersD-201604)
Text and Data Mining valid from 2019-01-17
Received: 12 September 2018
Accepted: 4 December 2018
First Online: 17 January 2019
Conflict of interest
: 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.