Wang, Dong
Yang, Shi-Kun
Zhao, Meng-Xi
Tang, Yong-Zhong
OU-Yang, Wen
Zhang, Hao
Liao, Qin http://orcid.org/0000-0002-9822-7777
Funding for this research was provided by:
the National Natural Sciences Foundation of China (NO.81870498)
Natural Sciences Foundation of Hunan province (2018JJ3785)
National Natural Sciences Foundation of China (81500558)
New Xiangya talent projects of the third Xiangya hospital of Central South University (20180303)
Article History
Received: 27 September 2019
Accepted: 5 February 2020
First Online: 14 February 2020
Ethics approval and consent to participate
: This study was in line with the guidelines of the Strengthening of Observational Epidemiological Studies (STROBE) statement [CitationRef removed], in accordance with the Helsinki declaration, and approved by the ethics committee of the third Xiangya hospital of Central South University (2018-S376). Because of retrospective study, informed consent was waived, in order to access the medical records of patients, we need the permission of Big data analysis center of the Third Xiangya hospital of Central South University.
: Not Applicable.
: The authors declare that they have no competing interests.