Tracheostomy: emergency or elective?
D004630:Emergencies; D049669:History, 16th Century; D049671:History, 18th Century; D049672:History, 19th Century; D049673:History, 20th Century; D006801:Humans; D007223:Infant; D014140:Tracheotomy / Q000009:adverse effects / Q000266:history / Q000379:methods