Luvira V, Satitkarnmanee E, Pugkhem A, Kietpeerakool C, Lumbiganon P, Pattanittum P. Postoperative adjuvant chemotherapy for resectable cholangiocarcinoma. Cochrane Database of Systematic Reviews 2021, Issue 9. Art. No.: CD012814. DOI: 10.1002/14651858.CD012814.pub2. Accessed 13 September 2021.