Funding for this research was provided by:
Natural Science Foundation of Jilin Province (81570888)
National Natural Science Foundation of China (81870683, 81400401)
Department of Science and Technology of Sichuan Province (2016JQ0026, 2015SZ0242)
National key scientific research program (2017YFC0907302)
Text and Data Mining valid from 2019-10-30
Received: 28 May 2019
Accepted: 9 October 2019
First Online: 30 October 2019
Ethics approval and consent to participate
: Approval for this case-control association study was provided by the Institutional Review Board of Sichuan Academy of Medical Sciences & Sichuan Provincial People’s Hospital in Sichuan Province, China. Each participant has signed the informed consent before participating in this study.
: Not applicable.
: The authors declare that they have no competing interests.