Fig. 4

Clinical characteristics in different risk groups. A, E Age-stratified patients (< 60 year and ≥ 60 year) in high- and low-risk groups. B, F Gender-stratified patients (male and female) in high- and low-risk groups. C Patients at different grades (G1-2 and G3-4) in high- and low-risk groups. D, G Patients at different stages (stage I-II and stage III-IV) in high- and low-risk groups