title: Respiratory obstruction in thyroid surgery.
mesh_terms: D000402:Airway Obstruction / Q000150:complications; D000769:Anesthesia, Inhalation; D003521:Cyclopropanes; D006371:Helium; D006801:Humans; D010100:Oxygen; D013961:Thyroid Gland / Q000601:surgery*
chemical_list: D003521:Cyclopropanes; D006371:Helium; D010100:Oxygen