Funding for this research was provided by:
National Natural Science Foundation of China (81901698, 81871424)
National Basic Research Program of China (973 Program) (2017YFC0107400)
Shaanxi Research and development plan (2016 MSZD-S-2-5)
Text and Data Mining valid from 2020-01-21
Received: 25 October 2019
Accepted: 27 December 2019
First Online: 21 January 2020
Ethics approval and consent to participants
: This study was approved by the Ethics Committee of Xijing Hospital with number KY20141104-2.
: Not applicable.
: The authors of this article declare that there is no conflict of interest.