The standard postoperative treatment for patients with cervical cancer who had high-risk factors is chemoradiation. Generally, weekly cisplatin or 5FU+cisplatin every 3 week have been used as chemotherapy regimens of chemoradiation. Based on their experience, the investigators hypothesized that tri-weekly cisplatin could be superior to weekly cisplatin. Therefore, the investigators are going to perform the efficacy study of postoperative, tri-weekly cisplatin chemoradiation for patients with cervical cancer.