1. Department of Otolaryngology, Shin Kong Wu-Ho-Su Memorial Hospital, Taipei, Taiwan
2. Department of Otolaryngology, National Taiwan University Hospital, Taipei, Taiwan
3. College of Medicine, Department of Otolaryngology, National Taiwan University, Taipei, Taiwan
4. Department of Otolaryngology, Taipei Hospital, Ministry of Health and Welfare, New Taipei City, Taiwan
5. Department of Nursing, Hsin Sheng Junior College of Medical Care and Management, Taoyuan, Taiwan