1. Department of Otorhinolaryngology, Head & Neck Surgery, West China Hospital, West China Medical School, Sichuan University, Chengdu, Sichuan, China
2. Department of Pathology, West China Hospital, West China Medical School, Sichuan University, Chengdu, Sichuan, China
3. Department of Ultrasound, West China Medical School, Sichuan University, Chengdu, Sichuan, China