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Survival curve for the BRAFV600E mutation & PD-L1 and the recurrence of early-stage PTC (log rank P=0.324) (A); survival curve for the BRAFV600E mutation & PD-L1 and PTMC recurrence (log rank P=0.076) (B). PD-L1, programmed death-ligand 1; PTMC, papillary thyroid microcarcinoma.
