Fu, Xian-zhi
Sun, Qi-wei
Sun, Chang-qing
Xu, Fei
He, Jun-jian
Funding for this research was provided by:
National Social Science Foundation of China (15BSH043)
Article History
Received: 24 September 2020
Accepted: 22 April 2021
First Online: 6 May 2021
Declarations
:
: The study is conducted in accordance with the ethical standards of the institutional and national research committees and with the 1964 Helsinki Declaration and its subsequent revisions or similar ethical standards. Each volunteer participant obtained a written informed consent based on inclusion criteria.
: Not applicable.
: The authors declare that there are no competing interests.