Tumor Mutational Burden as a Biomarker for Advanced Biliary Tract Cancer. - Kim, Hongsik; Kim, Hana; Kim, Ryul; Jo, Hyunji; Kim, Hye Ryeon; Hong, Joohyun; Park, Joon Oh; Park, Young Suk; Kim, Seung Tae (Technology in cancer research & treatment, 2021)