1. Department of Ophthalmology, Taipei Veterans General Hospital, Taipei, Taiwan
2. Department of Ophthalmology, School of Medicine, National Yang Ming Chiao Tung University, Hsinchu, Taiwan
3. Department of Otorhinolaryngology-Head and Neck Surgery, Taipei Veterans General Hospital, Taipei, Taiwan
4. Department of Otorhinolaryngology, School of Medicine, National Yang Ming Chiao Tung University, Hsinchu, Taiwan