Funding for this research was provided by:
The National Natural Science Foundation of China (81402127)
Nanfang Hospital High Level Matching Funding for NSFC (2014030)
Guangdong Medical Science and Technology research funding (A2018138)
Article History
Accepted: 16 January 2020
First Online: 29 January 2020
Compliance with Ethical Standards
:
: The authors declare that they have no conflict of interest.
: Informed consent of medical records data used as research purpose (MRD-RP) agreement was obtained before admission.
: This study was approved by the local ethics committee.