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http://www.cms.hhs.gov/NationalHealthExpendData/02_NationalHealthAccountsHistorical.asp#TopOfPage
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http://www.cdc.gov/NCCdphp/overview.htm
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5. Office of National Drug Control Policy: The Economic Costs of Drug Abuse in the United States, 1992-2002. 2004, Washington, D.C.: Executive Office of the President