Bronchial Provocation TestsMethacholine ChlorideBronchial HyperreactivitySpirometryAsthmaBronchoconstrictor AgentsForced Expiratory VolumeSkin TestsBronchoconstrictionAirway ResistanceMethacholine CompoundsRespiratory Function TestsVital CapacityOccupational DiseasesAdministration, InhalationIntradermal TestsBronchiAllergensHistamineNebulizers and VaporizersOccupational ExposureAerosolsBronchodilator AgentsImmunoglobulin ESaline Solution, HypertonicOvarian Function TestsMilk HypersensitivityWheat HypersensitivityLungDiabetes, GestationalAdenosine MonophosphateDrug HypersensitivityFood HypersensitivityHair PreparationsPulmonary Disease, Chronic ObstructiveDouble-Blind MethodAsthma, Exercise-InducedPeak Expiratory Flow RateAsthma, OccupationalRespiration DisordersUnithiolFlourImmunologic TestsGlucose Tolerance TestParabensAnaphylaxisDustPanic DisorderClomipheneToluene 2,4-DiisocyanateRespiratory HypersensitivityUrticariaPreservatives, PharmaceuticalBreath TestsHypersensitivity, ImmediateRespiratory SoundsWoodNasal Provocation TestsAir Pollutants, OccupationalAirway ObstructionRadioallergosorbent TestLung Diseases, ObstructivePredictive Value of TestsNaphtholsLung DiseasesMaximal Midexpiratory Flow RateForced Expiratory Flow RatesCross-Sectional Studies