2Teo PML, Leung SF, Lee WY, et al. Intracavitary brachytherapy significantly enhances local control of early T-stage nasopharyngeal carcinoma: the existence of a dose-tumor-control relationship above conventional tumoricidal dose[J]. Int J Radiat Oncol Biol Phys, 2000, 46(2) : 445-458.
3Yan JH, Xu GZ, Hu YH, et al. Management of local residual primary lesion of nasopharyngeal carcinomas Ⅱ. result of prospective randomized trial on booster dose[J]. Int J Radiat On-col Biol Phys, 1990,18(2):295-298.
4Qin DX, Hu YH, Yan JH, et al. Analysis of 1379 patients with nasopharyngeal carcinoma treated by radiation[J]. Caneer, 1988,61 (6):1117-1123.
