1. Department of Otolaryngology; Head and Neck Surgery; Chang Gung Memorial Hospital at Linkou and Chang Gung University; Taipei Taiwan
2. Head and Neck Oncology Group; Chang Gung Memorial Hospital at Linkou and Chang Gung University; Taipei Taiwan
3. Department of Radiation Oncology; Chang Gung Memorial Hospital at Linkou and Chang Gung University; Taipei Taiwan
4. Department of Internal Medicine; Division of Hematology/Oncology; Chang Gung Memorial Hospital at Linkou and Chang Gung University; Taipei Taiwan