Letter to the Editor Re: Yamamoto R, Sugiura T, Ashida R, Ohgi K, Yamada M, Otsuka S, and Uesaka K. Prognostic value of carbohydrate antigen 19-9 and the surgical margin in extrahepatic cholangiocarcinoma. Ann Gastroenterol Surg. 2022; 6:307-315

Ann Gastroenterol Surg. 2023 Jan 12;7(3):533-534. doi: 10.1002/ags3.12639. eCollection 2023 May.
No abstract available