1. Institute of Epidemiology and Preventive Medicine, College of Public Health, National Taiwan University, Taiwan
2. Department of Neurology, National Taiwan University Hospital, Taiwan
3. Department of Medical Imaging, National Taiwan University Hospital, Taiwan
4. Institute of Statistical Science, Academia Sinica, Taiwan
5. Graduate Institute of Physiology, National Taiwan University College of Medicine, Taipei, Taiwan
6. Department of Geriatrics and Gerontology, National Taiwan University Hospital, Taiwan
7. Department of Public Health, College of Public Health, National Taiwan University, Taiwan