An official website of the United States government
The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before
sharing sensitive information, make sure you’re on a federal
government site.
The site is secure.
The https:// ensures that you are connecting to the
official website and that any information you provide is encrypted
and transmitted securely.
Niu J, Wang X, Wang D, Ran L.Niu J, et al.Sensors (Basel). 2020 Feb 18;20(4):1119. doi: 10.3390/s20041119.Sensors (Basel). 2020.PMID: 32085653Free PMC article.
Wang L, Wang D, Zhou Y, Liu H, Shi J, Zhao Y, Zhang C, Niu J.Wang L, et al. Among authors: niu j.Front Psychol. 2020 Jul 15;11:1618. doi: 10.3389/fpsyg.2020.01618. eCollection 2020.Front Psychol. 2020.PMID: 32765369Free PMC article.
Niu J, Ma C, Liu J, Li L, Hu T, Ran L.Niu J, et al.Accid Anal Prev. 2020 Nov;147:105774. doi: 10.1016/j.aap.2020.105774. Epub 2020 Sep 17.Accid Anal Prev. 2020.PMID: 32949862
Niu J, An Y, Xu M, Zhang L, Liu J, Feng X, Li L, Song X, Niu W.Niu J, et al. Among authors: niu w.Work. 2023;75(4):1455-1465. doi: 10.3233/WOR-211113.Work. 2023.PMID: 36710694