The decline in the popularity of chloroform.
D000773:Anesthesia, Obstetrical / Q000266:history*; D000818:Animals; D002725:Chloroform / Q000009:adverse effects / Q000266:history*; D005060:Europe; D049673:History, 20th Century; D006801:Humans; D008887:Military Medicine / Q000266:history*; D014481:United States
D002725:Chloroform