1. Department of Computer Science and Information Engineering, National Cheng Kung University, Tainan, Taiwan
2. Sleep Medicine Center, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan
3. Department of Otolaryngology, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan
4. Institute of Medical Informatics, National Cheng Kung University, Tainan, Taiwan