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Treatment algorithm and chemotherapy regimens of the study patients. (A) Flow chart illustrating the treatment course of patients. iCCA: intrahepatic cholangiocarcinoma, pCTX: palliative chemotherapy, TACE: transarterial chemoembolization. (B) Flow chart indicating first- and second-line palliative chemotherapy (pCTX) of both groups. TACE: transarterial chemoembolization, GemCis: gemcitabine/cisplatin, GemOx: gemcitabine/oxaliplatin.
