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.
Tsaih SW, Korrick S, Schwartz J, Amarasiriwardena C, Aro A, Sparrow D, Hu H.Tsaih SW, et al. Among authors: sparrow d.Environ Health Perspect. 2004 Aug;112(11):1178-82. doi: 10.1289/ehp.7024.Environ Health Perspect. 2004.PMID: 15289163Free PMC article.
Weisskopf MG, Wright RO, Schwartz J, Spiro A 3rd, Sparrow D, Aro A, Hu H.Weisskopf MG, et al. Among authors: sparrow d.Am J Epidemiol. 2004 Dec 15;160(12):1184-93. doi: 10.1093/aje/kwh333.Am J Epidemiol. 2004.PMID: 15583371