Fig. 2

a Survival curves of patients with low and high total number of lymph nodes. b Survival curves stratified by lymph nodes ratio. c Survival of lymph nodes ratio 1 patients according to total number of lymph nodes. d Survival of lymph nodes ratio 2 patients according to total number of lymph nodes. e Survival of lymph nodes ratio 3 patients according to total number of lymph nodes. f Survival of lymph nodes ratio 4 patients according to total number of lymph nodes