DepressionDepressive DisorderSerotoninDepressive Disorder, MajorAntidepressive AgentsPsychiatric Status Rating ScalesStress, PsychologicalQuestionnairesSerotonin Plasma Membrane Transport ProteinsSerotonin Uptake InhibitorsReceptors, SerotoninReceptor, Serotonin, 5-HT2AFollow-Up StudiesReceptor, Serotonin, 5-HT1ARisk FactorsSerotonin AntagonistsReceptor, Serotonin, 5-HT2CDepression, PostpartumSerotonin AgentsReceptors, Serotonin, 5-HT2Receptor, Serotonin, 5-HT2BReceptor, Serotonin, 5-HT1BSerotonin Receptor AgonistsCortical Spreading DepressionReceptors, Serotonin, 5-HT1Serotonin SyndromeSerotonin 5-HT2 Receptor AntagonistsReceptors, Serotonin, 5-HT3Serotonin 5-HT2 Receptor AgonistsTryptophan HydroxylaseLong-Term Synaptic DepressionSerotonin 5-HT1 Receptor AgonistsReceptors, Serotonin, 5-HT4AnxietyCitalopramFluoxetineSerotonin 5-HT1 Receptor AntagonistsHydroxyindoleacetic AcidParoxetineAntidepressive Agents, Second-GenerationRaphe Nuclei5-HydroxytryptophanKetanserinSerotonergic NeuronsAnxiety DisordersSertralineAntidepressive Agents, Tricyclic8-Hydroxy-2-(di-n-propylamino)tetralinPersonality InventoryPsychotherapyMethysergideFenclonineAffectBrainComorbidityBiogenic MonoaminesReceptor, Serotonin, 5-HT1DCognitive TherapyTime FactorsSeverity of Illness Index5,7-DihydroxytryptamineRats, Sprague-DawleySerotonin 5-HT3 Receptor AntagonistsAnalysis of VarianceImipramineSynaptic TransmissionBehavior, AnimalCyclohexanolsDepression, ChemicalDopaminePsychometricsCross-Sectional StudiesTreatment OutcomeSuicideDiagnostic and Statistical Manual of Mental DisordersDysthymic DisorderCinanserinQuality of LifeNeuronsHippocampusFluvoxamineFenfluramineDose-Response Relationship, DrugBipolar DisorderPrevalenceMianserinLongitudinal StudiesMood DisordersElectric StimulationLife Change EventsInterview, PsychologicalSynapsesNeuronal PlasticityMonoamine OxidaseDepressive Disorder, Treatment-ResistantPrimary Health CareN-Methyl-3,4-methylenedioxyamphetamineAdaptation, PsychologicalClomipraminePsychological Tests