title: Allergic and non-allergic airways obstruction in bronchial asthma (an evaluation by FEV estimation).
mesh_terms: D000293:Adolescent; D000328:Adult; D000402:Airway Obstruction / Q000175:diagnosis / Q000209:etiology*; D001249:Asthma / Q000150:complications* / Q000175:diagnosis; D002648:Child; D005541:Forced Expiratory Volume; D006801:Humans; D012130:Respiratory Hypersensitivity / Q000175:diagnosis / Q000209:etiology*