MethadoneOpiate Substitution TreatmentNarcoticsOpioid-Related DisordersHeroin DependenceMaintenance ChemotherapyBuprenorphineMethadyl AcetateAnalgesics, OpioidHeroinRecurrenceTreatment OutcomeSubstance Abuse, IntravenousBrain ChemistrySubstance Abuse Treatment CentersDouble-Blind MethodBrain InjuriesNarcotic AntagonistsNeonatal Abstinence SyndromeAntimanic AgentsSubstance Abuse DetectionBrain NeoplasmsDrug Administration ScheduleCimetidineSubstance-Related DisordersAntipsychotic AgentsTime FactorsAminosalicylic AcidsSubstance Withdrawal SyndromeDuodenal UlcerBrain MappingCrimeDose-Response Relationship, DrugRanitidineLong-Term CarePatient DropoutsHarm ReductionDelayed-Action PreparationsSulfasalazineMesalamineCocaine-Related DisordersLithium CarbonateBronchodilator Agents6-MercaptopurineFluphenazineBipolar DisorderFollow-Up StudiesDrug Therapy, CombinationCyclohexanolsScopolamine DerivativesPatient ComplianceBrainRemission InductionColitis, UlcerativeNaloxoneAntidepressive Agents, Second-GenerationBudesonideAzathioprineClinical Trials as TopicPyrrolidinesDrug ToleranceNew York CityChinaCost-Benefit AnalysisAdministration, OralBenzodiazepinesBrain EdemaDrug OverdosePsychotherapyAdministration, InhalationAntidepressive AgentsBrain StemHIV InfectionsLithuaniaMorphineBrain IschemiaQuality-Adjusted Life YearsOutpatientsHepatitis CPrednisoneSeverity of Illness IndexStreet DrugsDextropropoxypheneEsophagitisAdrenal Cortex HormonesPsychiatric Status Rating ScalesLithiumProspective StudiesMagnetic Resonance ImagingRandomized Controlled Trials as TopicDrug CostsModels, EconomicPilot ProjectsDisease-Free SurvivalDrug CombinationsPlacebosAnti-Asthmatic AgentsAnti-Ulcer Agents2-PyridinylmethylsulfinylbenzimidazolesPrednisolone