title: Universal endoscopic coupler for bronchoscopic CO2 laser surgery: a multi-institutional clinical trial.
mesh_terms: D001982:Bronchial Diseases / Q000601:surgery; D020680:Bronchoscopes; D002245:Carbon Dioxide; D002986:Clinical Trials as Topic; D004867:Equipment Design; D005069:Evaluation Studies as Topic; D006801:Humans; D053685:Laser Therapy; D014133:Tracheal Diseases / Q000601:surgery
chemical_list: D002245:Carbon Dioxide