1. Division of Cardiovascular Surgery, Department of Surgery, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan 701, Taiwan
2. Department of Computer Science and Information Engineering, National Cheng Kung University, Tainan 701, Taiwan
3. Department of Psychology, National Cheng Kung University, Tainan 701, Taiwan
4. Department of Neurology, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan 701, Taiwan