Courvoisier's "law"--an eponym in evolution.
D001660:Biliary Tract Diseases / Q000266:history*; D004850:Eponyms; D005762:Gastroenterology / Q000266:history; D013502:General Surgery / Q000266:history; D049672:History, 19th Century; D049673:History, 20th Century; D006801:Humans; D013557:Switzerland