Funding for this research was provided by:
National Natural Science Foundation of China (81600227)
Received: 18 November 2019
Accepted: 17 February 2020
First Online: 27 February 2020
Ethics approval and consent to participate
: All participants provided written consent before entering the study, and approval was obtained from the Human Subjects Committee at the Zhongda Hospital, Southeast University.
: Not applicable.
: The authors declare that they have no competing interests.