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.
Schwartz BS, Stewart WF, Kelsey KT, Simon D, Park S, Links JM, Todd AC.Schwartz BS, et al.Environ Health Perspect. 2000 Mar;108(3):199-203. doi: 10.1289/ehp.00108199.Environ Health Perspect. 2000.PMID: 10706524Free PMC article.
Frisch M, Schwartz BS.Frisch M, et al. Among authors: schwartz bs.Environ Health Perspect. 2002 Apr;110(4):433-6. doi: 10.1289/ehp.02110433.Environ Health Perspect. 2002.PMID: 11940463Free PMC article.
Stewart WF, Schwartz BS, Simon D, Kelsey K, Todd AC.Stewart WF, et al. Among authors: schwartz bs.Environ Health Perspect. 2002 May;110(5):501-5. doi: 10.1289/ehp.02110501.Environ Health Perspect. 2002.PMID: 12003753Free PMC article.
Schwartz BS, Hu H.Schwartz BS, et al.Environ Health Perspect. 2007 Mar;115(3):451-4. doi: 10.1289/ehp.9782. Epub 2006 Dec 22.Environ Health Perspect. 2007.PMID: 17431498Free PMC article.Review.