Head and neck emergencies.
D000402:Airway Obstruction / Q000209:etiology* / Q000601:surgery; D002340:Carotid Artery Diseases / Q000209:etiology / Q000601:surgery; D004630:Emergencies; D006258:Head and Neck Neoplasms / Q000150:complications*; D006470:Hemorrhage / Q000209:etiology* / Q000601:surgery; D006801:Humans; D008026:Ligation; D014140:Tracheotomy