1. Department of Internal Medicine, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan
2. Department of Internal Medicine, College of Medicine, National Cheng Kung University, Tainan, Taiwan
3. Cognition and Aging Center, Department of General Neurology, Institutes for translational research in biomedicine, Kaohsiung Chang Gung Memorial Hospital, Chang Gung University College of Medicine, Kaohsiung, Taiwan
4. Department of Radiology, Kaohsiung Chang Gung Memorial Hospital, Chang Gung University College of Medicine, Kaohsiung, Taiwan
5. Department of Nuclear Medicine, Kaohsiung Chang Gung Memorial Hospital, Chang Gung University College of Medicine, Kaohsiung, Taiwan
6. Department of Neurology, Taipei Veterans General Hospital, Taipei, Taiwan
7. Department of Neurology, School of Medicine, National Yang-Ming Chia Tung University, Taipei, Taiwan