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MLA Citation
Shu Zhao et al.. “First‐line chemotherapy or in combination with programmed cell death protein‐1 antibody in patients with metastatic or recurrent biliary tract cancer.” Journal of gastroenterology and hepatology, vol. 36, no. 12, 2021, pp. 3541–3547. http://access.bl.uk/ark:/81055/vdc_100147220577.0x00003c