<qa>  What is the randomized controlled study conducted on patients with colorectal cancer assigned to postA randomized controlled study is conducted on patients with histological stage III colorectal cancer assigned to postoperative adjuvant therapy of uracil-tegafur plus leucovorin UFTLV, UFTLV UFT, or UFTLVPSK UFTPSK. The usefulness of the three regimens was evaluated by comparing the disease-free survival rate, overall survival rate, incidence and severity of adverse event, and quality of life. 