title: Evolution of intensive outpatient treatment (IOP) as a "legitimate" treatment modality.
authors.forename: A M
authors.initials: AM
authors.lastname: Washton
mesh_terms: D000553:Ambulatory Care / Q000379:methods* / Q000592:standards / Q000639:trends*; D006801:Humans; D008329:Managed Care Programs; D017060:Patient Satisfaction; D018579:Patient Selection; D015397:Program Evaluation; D019966:Substance-Related Disorders / Q000628:therapy*