Anesthesia in otolaryngology: historical overview.
D000776:Anesthesiology / Q000266:history*; D005060:Europe; D049671:History, 18th Century; D049672:History, 19th Century; D049673:History, 20th Century; D006801:Humans; D010036:Otolaryngology / Q000266:history*; D010414:Pennsylvania; D014481:United States; D014768:Virginia