title: Disposable mouthpieces.
mesh_terms: D000328:Adult; D005260:Female; D006801:Humans; D008171:Lung Diseases / Q000503:physiopathology; D008297:Male; D008722:Methods; D012123:Pulmonary Ventilation; D012143:Respiratory Physiological Phenomena; D013147:Spirometry / Q000295:instrumentation*