1. School of Medicine, Chang Gung University, Taoyuan, Taiwan
2. Division of Chinese Internal Medicine, Center for Traditional Chinese Medicine, Chang Gung Memorial Hospital, Linkou, Taiwan
3. Department of Otorhinolaryngology—Head and Neck Surgery, Chang Gung Memorial Hospital, Linkou, Taiwan
4. Department of Otorhinolaryngology—Head and Neck Surgery, New Taipei Municipal Tucheng Hospital, New Taipei City, Taiwan
5. Department of Medical Imaging and Intervention, Chang Gung Memorial Hospital, Linkou, Taiwan