Figure 3

Kaplan–Meier curve of cancer-specific survival after surgery of patients with stages I–III colorectal cancer by tumor marker index levels. (a) Stage I, (b) stage II, and (c) stage III colorectal cancer.

Kaplan–Meier curve of cancer-specific survival after surgery of patients with stages I–III colorectal cancer by tumor marker index levels. (a) Stage I, (b) stage II, and (c) stage III colorectal cancer.