Sun, Bao
Luo, Zhiying
Zhou, Jiecan
Funding for this research was provided by:
Natural Science Foundation of Hunan Province (2020JJ5513)
Scientific Research Fund Project of Hunan Provincial Health Commission (20201973)
Scientific Research Fund of Hunan Provincial Education Department (19A418)
Article History
Received: 6 November 2020
Accepted: 24 December 2020
First Online: 7 January 2021
Ethics approval and consent to participate
: Not applicable.
: All authors have approved the final manuscript for publication.
: The authors declare that they have no competing interests.