SpirometryReference ValuesForced Expiratory VolumeVital CapacityRespiratory Function TestsReference StandardsPulmonary Disease, Chronic ObstructiveReproducibility of ResultsAge FactorsAsthmaPulmonary Diffusing CapacityClinical Chemistry TestsLungSex FactorsCross-Sectional StudiesBody HeightTotal Lung CapacityLung DiseasesHematologic TestsBronchodilator AgentsBlood Chemical AnalysisAnthropometrySensitivity and SpecificityAirway ObstructionAirway ResistanceChemistry, Clinical