Chen, Yi
Guo, Lei
Shi, Yongqiang
Ma, Gang
Xue, Wei
He, Ling
Ma, Shuqin
Ni, Xinli http://orcid.org/0000-0002-2857-1951
Funding for this research was provided by:
National Natural Science Foundation of China (81660229, 81860213)
Ningxia Personnel Training Project (KJT2015017)
Article History
Received: 21 April 2020
Accepted: 18 June 2020
First Online: 25 June 2020
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.
: The study protocol was in accordance with the ethical standards of the local Medical Ethics Committee of the General Hospital of Ningxia Medical University, Yinchuan, China <i>(</i>No. 2019-382 on 7 June 2019). The study was conducted in accordance with the Declaration of Helsinki.