Fig. 1

Overall survival curves according to mitotic index of primary tumor in all patients undergoing SLNB (cohort 1) (1, <1/mm2; 2, 1/mm2; 3, 2–5/mm2; 4. >5/mm2)
Overall survival curves according to mitotic index of primary tumor in all patients undergoing SLNB (cohort 1) (1, <1/mm2; 2, 1/mm2; 3, 2–5/mm2; 4. >5/mm2)