Funding for this research was provided by:
the National Key Research & Developmental Program of China (2017YFC1001103)
the Clinical Research Startup Program of Southern Medical University by High-level University Construction Funding of Guangdong Provincial Department of Education (LC2016ZD010)
Clinical Research Program of Nanfang Hospital, Southern Medical University (2018CR016)
Text and Data Mining valid from 2019-07-06
Received: 18 April 2019
Accepted: 1 July 2019
First Online: 6 July 2019
Ethics approval and consent to participate
: This study was approved by the Ethics Committee of Nanfang Hospital, Nanfang Medical University (NFEC-2017-197).
: Not applicable.
: The authors declare that they have no competing interests.