1. Department of Otorhinolaryngology--Head and Neck Surgery, International Thyroid Surgery Center, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung, Taiwan
2. Department of Computer Science and Information Engineering, National Taipei University, New Taipei, Taiwan
3. Department of Otolaryngology--Head and Neck Surgery, E-DA Hospital, I-Shou University, Kaohsiung, Taiwan
4. Department of Otolaryngology, Kaohsiung Medical University Hospital, Kaohsiung, Taiwan
5. Institute of Imaging and Biomedical Photonics, National Yang Ming Chiao Tung University, Tainan, Taiwan