She, Yangyang
Kong, Xiangbo
Ge, Yaping
Yin, Ping
Liu, Zhiyong
Chen, Jieyu
Gao, Feng
Fang, Silian http://orcid.org/0000-0003-1353-1022
Funding for this research was provided by:
Natural Science Foundation of Guangdong Province (2015A030313064)
Science and Technology Planning Project of Guangdong Province (2017A010105027)
Article History
Received: 14 October 2019
Accepted: 10 January 2020
First Online: 17 January 2020
Ethics approval and consent to participate
: This is a retrospective trial from public datasets with minimal risk and we petition for waiver of ethics consent.
: We have obtained consents to publish this paper from all participants of this study.
: The authors declare that they have no competing interests.