CoughWhooping CoughAntitussive AgentsSymptom AssessmentCapsaicinDepressionRespiratory SoundsQuestionnairesCitric AcidAsthmaSeverity of Illness IndexCodeineChronic DiseaseRespiration DisordersTreatment OutcomeRespiratory Tract DiseasesGastroesophageal RefluxReflexBronchitisExpectorantsProspective StudiesBehavioral SymptomsPrevalencePsychiatric Status Rating ScalesCommon ColdTime FactorsQuality of LifeFollow-Up StudiesForced Expiratory VolumeCross-Sectional StudiesRespiratory Function TestsRespiratory Tract InfectionsBronchial Provocation TestsRisk FactorsDyspneaAdministration, InhalationBordetella pertussisAffective SymptomsNasal DecongestantsSputumVital CapacityPeak Expiratory Flow RateAnxietyGuaifenesinDepressive DisorderRhinitisRetrospective StudiesLongitudinal StudiesFatigueOccupational DiseasesLarynxStress Disorders, Post-TraumaticNonprescription Drugs