EthanolaminesAsthmaBronchodilator AgentsBudesonideAdministration, InhalationAlbuterolMetered Dose InhalersAdrenergic beta-AgonistsAnti-Asthmatic AgentsForced Expiratory VolumeTerbutalineAdrenergic beta-2 Receptor AgonistsAerosol PropellantsNebulizers and VaporizersDouble-Blind MethodPeak Expiratory Flow RatePowdersDrug CombinationsScopolamine DerivativesCross-Over StudiesPulmonary Disease, Chronic ObstructiveAdrenal Cortex HormonesBeclomethasoneAsthma, Exercise-InducedDrug Therapy, CombinationInhalation SpacersBronchoconstrictionSpirometryPregnadienediolsTreatment OutcomeDry Powder InhalersReceptors, Adrenergic, beta-2Respiratory Function TestsDrug Administration ScheduleHydrocarbons, FluorinatedGlucocorticoidsMethacholine ChlorideAndrostadienesBronchoconstrictor AgentsBronchiLungBronchial HyperreactivityChlorofluorocarbonsVital CapacityDose-Response Relationship, DrugFenoterolAnti-Inflammatory AgentsAsthma, OccupationalTracheitisCholinergic AntagonistsRespiratory SoundsTime FactorsSeverity of Illness IndexAllergensBronchial DiseasesDyspneaNedocromilHypersensitivityLeukotriene AntagonistsBronchial Provocation TestsIndansAirway ResistanceQuality of LifeHypersensitivity, ImmediateDrug ToleranceAdministration, OralCromolyn SodiumEosinophilsHistamineArea Under CurveDrug InteractionsSputumRhinitisRandomized Controlled Trials as TopicRespiratory SystemDiagnostic Techniques, Respiratory SystemPhosphodiesterase 4 InhibitorsRhinitis, Allergic, PerennialAerosolsMaximal Midexpiratory Flow RateQuestionnairesPlethysmography, Whole BodyLung Diseases, ObstructiveTracheaQuinolonesIpratropiumSkin TestsQuinolinesTremorPrevalenceBreath TestsPicornaviridae InfectionsAdrenergic AgentsBronchoalveolar Lavage FluidAcute DiseaseStatus AsthmaticusAirway RemodelingCyclopropanesUridine Diphosphate Glucuronic AcidMaximal Expiratory Flow-Volume Curves