Funding for this research was provided by:
China Postdoctoral Science Foundation (2018M633031)
National Natural Science Foundation of China (81430021,81870856, U1503222,U1603281, 81771401)
National Key R&D Program of China (2016YFC1306601, 2017YFC1306002)
Technology Project of Guangzhou (201504281820463 ,2018-1202-SF-0019)
Text and Data Mining valid from 2019-12-01
Received: 31 May 2019
Accepted: 20 November 2019
First Online: 17 December 2019
Ethics approval and consent to participate
: All the subjects wrote their agree-statement forms and the project was approved by the Ethics Committee of the first affiliated hospital of Guangzhou Medical University.
: Not applicable.
: The authors declare that they have no competing interests.