DepressionQuestionnairesPsychiatric Status Rating ScalesSeverity of Illness IndexBehavioral SymptomsSymptom AssessmentPrevalenceAnxietyGastrointestinal DiseasesDepressive DisorderQuality of LifeTreatment OutcomeRisk FactorsHallucinationsProspective StudiesUrination DisordersCross-Sectional StudiesFatigueAffective SymptomsGastroesophageal RefluxFollow-Up StudiesDelusionsConversion DisorderPsychophysiologic DisordersLongitudinal StudiesComorbidityTime FactorsPsychotic DisordersCoughSchizophreniaSchizophrenic PsychologyPainIrritable Bowel SyndromeConstipationPremenstrual SyndromeHot FlashesIrritable MoodStress, PsychologicalAsthmaCognition DisordersStress Disorders, Post-TraumaticDyspneaHeartburnOccupational DiseasesDizzinessNeuropsychological TestsPersonality InventoryDyspepsiaMagnetic Resonance ImagingNervous System DiseasesSleep Disorders, IntrinsicAge FactorsSex FactorsSomatoform DisordersLower Urinary Tract SymptomsDyspareuniaRespiration DisordersPsychometricsDiagnostic Techniques, Digestive SystemSyndromeAntidepressive AgentsDiagnostic and Statistical Manual of Mental DisordersSleep DisordersTomography, X-Ray ComputedCohort StudiesChronic DiseaseRetrospective StudiesDissociative DisordersParesthesiaDepressive Disorder, MajorAnxiety DisordersAffectAbdominal PainRespiratory SoundsColonic Diseases, FunctionalMental DisordersHypochondriasisBipolar DisorderDelayed DiagnosisRegression AnalysisAttention Deficit Disorder with HyperactivityHealth SurveysSelf ReportMood DisordersRespiratory Tract DiseasesMusculoskeletal DiseasesPsychomotor AgitationLogistic ModelsHealth StatusVomitingPrognosisCase-Control StudiesSleep Initiation and Maintenance DisordersPredictive Value of TestsUrologic DiseasesPostpoliomyelitis SyndromeNauseaParkinson DiseaseEsophageal DiseasesAge of Onset