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.
Tsai CK, Cheng HH, Hsu TY, Wang JY, Hung CH, Tsai CC, Lai YJ, Lin YJ, Huang HC, Chan JYH, Tain YL, Chen CC, Tsai TA, Yu HR.Tsai CK, et al. Among authors: hung ch.Int J Environ Res Public Health. 2021 Jun 11;18(12):6364. doi: 10.3390/ijerph18126364.Int J Environ Res Public Health. 2021.PMID: 34208324Free PMC article.