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Figure 1: Survival after R1 resection. Kaplan-Meier Survival Function Plot. Asterisk denotes   𝑃 < 0 . 0 5   for Logrank test versus the control group BYP M0. BYP: palliative bypass procedure, M0: absence of distant metastasis at laparotomy, R0/R1: pancreatoduodenectomy with free/microscopically positive resection margins.