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PubMed
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- Published online September 8, 2009.
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- GLINDA S. COOPER, PhD, Senior Epidemiologist
- US Environmental Protection Agency, and Department of Environmental and Occupational Health, George Washington University School of Public Health and Health Services, 1200 Pennsylvania Ave NW, 8601-P Washington, DC 20460 USA.
- Address correspondence to G.S. Cooper; E-mail: cooper.glinda{at}epa.gov The views expressed in this article are those of the author and do not necessarily reflect the views or policies of the US Environmental Protection Agency.