title: Purchasing systems for chemical dependency and mental health services.
mesh_terms: D003362:Cost-Benefit Analysis; D006801:Humans; D007348:Insurance, Health / Q000191:economics*; D008605:Mental Health Services / Q000706:statistics & numerical data*; D009786:Occupational Health Services / Q000191:economics*; D011243:Preferred Provider Organizations / Q000191:economics*; D012017:Referral and Consultation / Q000191:economics*; D019966:Substance-Related Disorders / Q000191:economics* / Q000628:therapy; D014481:United States