Funding for this research was provided by:
National Natural Science Foundation of China (81372985, 81673147)
Fundamental Research Funds for the Central Universities (2242017K40035)
General Program of University Science Research Project of Jiangsu Province (17KJB190001)
Text and Data Mining valid from 2019-11-12
Received: 12 July 2019
Accepted: 1 November 2019
First Online: 12 November 2019
Ethics approval and consent to participate
: The study protocol was approved by the Institutional Review Board of Southeast University Zhongda Hospital with approval number 2012ZDllKY19.0, in accordance with the Declaration of Helsinki. All the participants signed informed consent forms.
: Not applicable.
: The authors declare that they have no competing interests.