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Flow diagram of selection of patients with resected pancreatic cancer in a multi‐institutional cohort. aFor analyses of disease‐free survival, we further excluded 53 patients with a resected metastatic lesion, R2 resection margin, or no available cross‐sectional imaging following the index surgery. IPMN, intraductal papillary mucinous neoplasm; JFCR, Japanese Foundation for Cancer Research; KU, Keio University; UT, The University of Tokyo
