1. Department of Otolaryngology, The First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou City, Zhejiang Province, China
2. Center of PET/CT, The First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou City, Zhejiang Province, China
3. Department of Radiotherapy, The First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou City, Zhejiang Province, China
4. State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, The First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou City, Zhejiang Province, China