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4. Texas Commission of Alcohol and Drug Abuse. Prevelance of Substance Abuse and Indiginency: 2000 Texas Survey of Substance Use Among Adults. Austin, TX: Author; July 2001:22–23.
5. Texas Department of State Health Services. Number of Admissions: DSHS Admission Records, Behavioral Health Integrated Providers System. Austin, TX: Author; 2005.