Article History
Received: 3 October 2020
Accepted: 23 December 2020
First Online: 11 January 2021
Ethics approval and consent to participate
: The study protocol was approved by the institutional review board of Central South University. The retrospective study was based on non-interventional data analysis, therefore the written informed consent was waived by the institutional review board according to Technical Guidelines for Clinical Trials of Diagnostic Reagents in Vitro (the attachment of No. 16 announcement in 2014) issued by the China Food and Drug Administration.The access to the the clinic data bank in The Second Xiangya Hospital of Central South University requires the application for scientific research purpose, which is approved by the institutional review board of Central South University.
: Not applicable.
: No competing interests are declared.