title: Permanent tubeless tracheal vent for cough syncope and pulmonary insufficiency due to emphysema; with an analysis of treated cases and emphasis on late results.
mesh_terms: D003371:Cough; D004259:DNA-Directed DNA Polymerase; D004646:Emphysema; D006801:Humans; D011656:Pulmonary Emphysema / Q000601:surgery*; D013510:Pulmonary Surgical Procedures; D013575:Syncope; D014132:Trachea / Q000601:surgery*
chemical_list: C070331:Tli polymerase; D004259:DNA-Directed DNA Polymerase
keywords: EMPHYSEMA, PULMONARY/surgery; TRACHEA/surgery