AgoraphobiaPanic DisorderPhobic DisordersAnxiety DisordersImplosive TherapyPsychiatric Status Rating ScalesAnticipation, PsychologicalDiagnostic and Statistical Manual of Mental DisordersCognitive TherapyQuestionnairesNew EnglandPsychometricsInterview, PsychologicalComorbidityAnxietyDepressive DisorderSeverity of Illness IndexBaltimoreFactor Analysis, Statistical