1. Department of Radiology, Beijing Friendship Hospital Capital Medical University Beijing China
2. Department of Otolaryngology Beijing Jingmei Group General Hospital Beijing China
3. Department of Otolaryngology Head and Neck Surgery, Beijing Friendship Hospital Capital Medical University Beijing China
4. Department of Otolaryngology, Beijing Hospital National Center of Gerontology Beijing China
5. Institute of Geriatric Medicine Chinese Academy of Medical Sciences Beijing China