Tonga, K O Steroid insensitive fixed airflow obstruction is not related to airway inflammation in older non-smokers with asthma. [electronic resource] - Respiratory research Sep 2018 - 176 p. digital Publication Type: Letter ISSN: 1465-993X Standard No.: 10.1186/s12931-018-0880-2 doi Subjects--Topical Terms: Adrenal Cortex Hormones--pharmacologyAgedAsthma--diagnosisBronchoalveolar Lavage FluidCohort StudiesCross-Sectional StudiesFemaleForced Expiratory Volume--drug effectsHumansInflammation--diagnosisMaleMiddle AgedNon-SmokersProspective StudiesPulmonary Disease, Chronic Obstructive--diagnosisRespiratory Function Tests--methodsSpirometry--methods