1. Department of Otolaryngology-Head and Neck Surgery, Taipei Veterans General Hospital, Taipei, Taiwan;
2. Department of Otorhinolaryngology, National Yang-Ming University, Taipei, Taiwan;
3. Institute of Brain Science, National Yang-Ming University, Taipei, Taiwan;
4. Department of Otolaryngology-Head and Neck Surgery, Cheng Hsin General Hospital, Taipei, Taiwan