The DARP research program and data system.
D003710:Demography; D001330:Electronic Data Processing; D005069:Evaluation Studies as Topic; D005380:Financing, Government; D005500:Follow-Up Studies; D006040:Goals; D006760:Hospitalization; D006801:Humans; D007256:Information Systems; D008499:Medical Records; D012107:Research Design; D019966:Substance-Related Disorders / Q000453:epidemiology / Q000534:rehabilitation*; D014481:United States