Respiratory Function TestsForced Expiratory VolumeSpirometryVital CapacityLungAsthmaPulmonary Disease, Chronic ObstructiveLung Volume MeasurementsPlethysmography, Whole BodyLung DiseasesAirway ResistanceReproducibility of ResultsProspective StudiesCross-Sectional StudiesFollow-Up StudiesLung NeoplasmsLung InjuryForced Expiratory Flow RatesLung TransplantationTotal Lung CapacitySmokingLung Diseases, ObstructiveMaximal Midexpiratory Flow RateCystic FibrosisPeak Expiratory Flow RateMaximal Expiratory Flow RateDustCarcinoma, Non-Small-Cell LungAdministration, InhalationRespiration DisordersPulmonary Diffusing CapacityBronchodilator AgentsAcute Lung InjuryPulmonary VentilationPulmonary EmphysemaRespiratory MechanicsAirway ObstructionOccupational ExposureLung ComplianceBronchial HyperreactivityBronchial Provocation TestsBronchoalveolar Lavage FluidFunctional Residual CapacityLung Diseases, InterstitialPulmonary FibrosisTime FactorsRespiratory Tract DiseasesResidual VolumeCohort StudiesCoal MiningMethacholine ChlorideOccupational DiseasesAnti-Asthmatic AgentsPulmonary AlveoliBronchitisPulmonary Gas ExchangeReference ValuesPneumoconiosisDyspneaSputumBronchiAlbuterolBreath TestsAir PollutantsRegression AnalysisLinear ModelsRisk FactorsRespirationSensitivity and SpecificityTomography, X-Ray ComputedEmphysemaInhalation Exposurealpha 1-Antitrypsin DeficiencyAir Pollutants, OccupationalCoughRespiratory Physiological PhenomenaMaximal Expiratory Flow-Volume CurvesTreatment OutcomeBronchoconstrictor AgentsAdrenal Cortex HormonesSeverity of Illness IndexLongitudinal StudiesPneumoniaBiological MarkersEnvironmental ExposureExhalationPulmonary SurfactantsOzoneOxygenCase-Control StudiesAnalysis of VarianceAerosolsPredictive Value of TestsAsbestosisSilicosisAir PollutionTidal VolumeBronchiectasisHeliumTobacco Smoke Pollution