1. Department of Otolaryngology, Sijhih Cathay General Hospital, New Taipei City, Taiwan;
2. School of Medicine, Fu Jen Catholic University, New Taipei City, Taiwan;
3. Department of Otolaryngology, Cathay General Hospital, Taipei, Taiwan;
4. School of Information Science and Technology, Fudan University, Shanghai, P. R. China;
5. Department of Computer Science & Information Engineering, National Central University, Taoyuan, Taiwan;
6. Department of Computer Science, Stanford University, Stanford, USA