Funding for this research was provided by:
National Natural Science Foundation of China (81370326, 81641005)
National Precision Medical Research Program of China (2016YFC0905602)
Beijing Municipal Science and Technology Project (Z181100001718200)
Text and Data Mining valid from 2019-05-14
First Online: 14 May 2019
Compliance with ethical standards
: The authors have no conflicts of interest to declare.