Panic DisorderPanicAnxietyAgoraphobiaAnxiety DisordersPhobic DisordersSodium LactateTetragastrinPsychiatric Status Rating ScalesDiagnostic and Statistical Manual of Mental DisordersClonazepamAnxiety, SeparationAlprazolamCognitive TherapyMental DisordersAnti-Anxiety AgentsMood DisordersPsychoanalytic TherapyDepressive Disorder, MajorBipolar DisorderDepressive DisorderImplosive TherapyComorbidityStress Disorders, Post-TraumaticFearAllylglycineObsessive-Compulsive DisorderPersonality InventoryRepression-SensitizationSerotonin Uptake InhibitorsInterview, PsychologicalDepressionDental AnxietyHyperventilationParoxetineDysthymic DisorderManifest Anxiety ScaleAlcohol-Induced DisordersSomatoform DisordersPsychotherapyImipramineSeverity of Illness IndexQuestionnairesRelaxation TherapyStartle ReactionPersonality AssessmentPrevalenceAntidepressive Agents, TricyclicAntidepressive AgentsPsychotherapy, GroupHypocapniaTreatment OutcomePsychophysiologic DisordersPsychometricsPsychopharmacologyRespiration DisordersAlkalosis, RespiratoryTest Anxiety ScaleElectronystagmographySubstance-Related DisordersAnalysis of VarianceStress, PsychologicalNeurotic DisordersPsychoanalytic TheoryRespiratory Rate