1. Department of Otolaryngology; the First Affiliated Hospital of Sun Yat-sen University; Guangzhou China
2. Guangzhou Key Laboratory of Otorhinolaryngology; Guangzhou China
3. Department of Medical Ultrasonics; Institute of Diagnostic and Interventional Ultrasound; the First Affiliated Hospital of Sun Yat-sen University; Guangzhou China
4. Faculty of Medicine; School of Biomedical Sciences; the Chinese University of Hong Kong; Hong Kong SAR