Received: 4 December 2017
Accepted: 10 September 2019
First Online: 18 September 2019
Ethics approval and consent to participate
: This study was ethically approved by the Second Xiangya Hospital committee for clinical research. Permission for data collection was obtained from the hospital laboratory manager. Patients’ data obtained in the course of the study were reserved confidential and used only for this study.
: Not applicable.
: The authors declare that they have no competing interests.