Pharmaceutic AidsIpratropiumAtropine DerivativesAsthmaAnti-Asthmatic AgentsAsthma, Exercise-InducedAdministration, InhalationPeak Expiratory Flow RateAsthma, OccupationalForced Expiratory VolumeBronchial HyperreactivityBronchodilator AgentsRespiratory SoundsAllergensAdrenal Cortex HormonesHypersensitivityHypersensitivity, ImmediateRespiratory Function TestsRhinitisAlbuterolMethacholine ChlorideRhinitis, Allergic, PerennialSpirometryBudesonideEosinophilsBeclomethasoneBronchiLeukotriene AntagonistsNebulizers and VaporizersSkin TestsSeverity of Illness IndexLungPrevalenceStatus AsthmaticusBronchoconstrictor AgentsAirway RemodelingBronchoconstrictionBronchitisQuestionnairesAdrenergic beta-AgonistsRespiratory HypersensitivityOvalbuminPyroglyphidaePulmonary MedicineVital CapacityAsthma, Aspirin-InducedSputumBronchoalveolar Lavage FluidGlucocorticoidsExhalationAirway ObstructionCoughAir Pollution, IndoorOccupational DiseasesEosinophiliaMitesRisk FactorsEnvironmental ExposureCross-Sectional StudiesAir PollutantsAnti-Inflammatory AgentsBreath Tests