Fig. 1From: An age-group analysis on the efficacy of chemotherapy in older adult patients with metastatic biliary tract cancer: a Japanese cancer registry cohort studyOverview of patient selection and stratification by use of chemotherapyAbbreviations: BTC, biliary tract cancer; DCCH, Designated Cancer Care hospital; HBCR, hospital-based cancer registry; DPC, Diagnosis Procedure Combination; BSC, best supportive careBack to article page