CannabisSubstance Withdrawal SyndromeMarijuana AbuseDronabinolIrritable MoodCannabinoidsDiagnostic and Statistical Manual of Mental DisordersMarijuana SmokingDiseases in TwinsAppetite StimulantsCannabinoid Receptor AgonistsTobacco Use DisorderSmoking CessationMorphine DependenceTobacco Use Cessation ProductsNicotineAlcohol Withdrawal DeliriumAnorexiaNaloxonePain PerceptionDouble-Blind MethodOpioid-Related DisordersNarcotic AntagonistsPsychotropic DrugsAlcohol Withdrawal SeizuresNicotinic AgonistsBupropionBuprenorphineBehavior, AddictiveNeonatal Abstinence SyndromeSmokingAlcoholismMorphineAnalgesics, Non-NarcoticChlormethiazolePlacebo EffectAnhedoniaDrug ToleranceCannabidiolHeroin DependenceMethadoneDose-Response Relationship, DrugSubstance-Related DisordersNarcoticsAnxietyTreatment OutcomeEthanolChewing GumSodium OxybateTime FactorsDrug Administration ScheduleOpiate Substitution TreatmentCotinineBenzodiazepinesPsychiatric Status Rating ScalesClomipramineQuestionnairesAffectAnti-Anxiety AgentsAdministration, CutaneousCarbon MonoxidePsychoses, Substance-InducedAnalgesics, OpioidCarbamazepineCentral Nervous System DepressantsHypnotics and SedativesCross-Over StudiesRecurrenceSeverity of Illness IndexNaltrexoneSleepMotivationAnalysis of VarianceBenzazepinesCannabinolClonidine