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.
Allen LP, Baez J, Stern MEC, Takahashi K, George F.Allen LP, et al.Int J Environ Res Public Health. 2018 Mar 16;15(3):531. doi: 10.3390/ijerph15030531.Int J Environ Res Public Health. 2018.PMID: 29547510Free PMC article.
Allen LP, Blake AM, Durbin GM, Ingram D, Reynolds EO, Wimberley PD.Allen LP, et al.Br Med J. 1975 Oct 18;4(5989):137-9. doi: 10.1136/bmj.4.5989.137.Br Med J. 1975.PMID: 1104048Free PMC article.