2Fu KK, Pajak TE, Trotti A, et al. A radiation therapy ontology group (RTOG) phase Ⅲ randomized study to compare hyperfractionation and two variants of accelerated fractionation to standard fractionation radiotherapy for head and neck squamous cell carcinomas: first report of RTOG 9003 [J] . Int J Radiat Oncol Biiol Phys, 2000, 48:7 - 16.
3Johansen LV, Gmu C, Overgaard JI. Squamous cell carcinoma of the oropharynx- an analysis of treatment results in 289 consecutive patients[J]. Aeta Oncol, 2000, 39:985 - 994.
4Nathu RM, Mancuso AA, Zhu TC,et al. The impact of primary tumor volume on local control for oropharyngeal squamous cell carcinoma treated with radiotherapy[J]. Head Neck, 2000, 22:1-5.
5Lindelv B, Hansen HS. The impact of lymph node metastases on the results of treatment by primary radiotherapy and secondary surgery in oropharyngeal cancer [J]. Acta Oncol, 1995, 34:965 -968.
6Forastiere AA. Head and neck cancer: overview of recent developments and future directions [J]. Semin Oncol, 2000, 27,suppl 8:1 -4.
