Huang, Xing
Xiao, Zhigang
Yan, Wei
Chen, Si
Luo, Weizhen
Huang, Zhongcheng
Article History
Received: 23 January 2019
Accepted: 9 August 2019
First Online: 16 August 2019
Compliance with Ethical Standards
: Ethical approval for the study was obtained from the ethics committee of Hunan Provincial People’s Hospital, and informed consent from all individual participants included in the study were obtained.
: The authors declare that they have no conflict of interest.