Fig. 4
![Fig. 4](http://media.springernature.com/full/springer-static/image/art%3A10.1186%2Fs40880-018-0293-0/MediaObjects/40880_2018_293_Fig4_HTML.gif)
Kaplan-Meier curves according to quartiles of nomogram point. a SYSUCC; b CMU; c TJMU. SYSUCC Sun Yat-sen University Cancer Center; CMU Chinese Medical University; TJMU Tianjin Medical University
Kaplan-Meier curves according to quartiles of nomogram point. a SYSUCC; b CMU; c TJMU. SYSUCC Sun Yat-sen University Cancer Center; CMU Chinese Medical University; TJMU Tianjin Medical University