Funding for this research was provided by:
National Natural Science Foundation of China (No.81602255)
Received: 4 May 2019
Accepted: 8 January 2021
First Online: 21 January 2021
Ethics approval and consent to participate
: Ethical approval was sought from the Research Ethical Committee of the study hospital. Consent was obtained from the participants upon recruitment. Participation was voluntary for this study, and the participants were free to withdraw from the study at any point of time without penalty.
: Not applicable.
: The authors declare that they have no competing interests.