1. Department of Otolaryngology – Head and Neck Surgery, Xiangya Hospital Central South University Changsha China
2. Otolaryngology Major Disease Research Key Laboratory of Hunan Province Changsha China
3. Clinical Research Center for Pharyngolaryngeal Diseases and Voice Disorders in Hunan Province Changsha China
4. National Clinical Research Center for Geriatric Disorders Xiangya Hospital Changsha China