7Chen CY, Han F, Zhao C, et al. Treatment results and late complications of 556 patients with locally advanced naso- pharyngeal carcinoma treated with radiotherapy alone [ J ]. Br J Radiol,2009,82 (978) :452-458.
8Pauli N, Johnson J, Finizia C, et al. The incidence of tru- isms and long-term impact on health-related quality of life in patients with head and neck cancer[ J ]. Acta Oncologi- ca,2013,52(6) :1137-1145.
9Scott B, Butterworth C, Lowe D, et al. Factors associated with restricted mouth opening and its relationship to health-related quality of life in patients attending a Maxil- lofacial Oncology clinic [ J ]. Oral oncology, 2008,44 ( 5 ) :430-438.
10Chen Y,Zhao C, Wang J, et al. Intensity-modulated radia- tion therapy reduces radiation-induced trismus in patients with nasopharyngeal carcinoma [ J ]. Cancer, 2011,117 (13) :2910-2916.
