1. Department of Neurology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
2. Department of Neurology, Chonnam National University Medical School, Chonnam National University Hospital, Gwangju, Korea
3. Department of Health Sciences and Technology, SAIHST, Sungkyunkwan University, Seoul, Korea
4. Neuroscience Center, Samsung Medical Center, Seoul, Korea
5. Department of Neurology, Kangwon National University Hospital, Kangwon National University College of Medicine, Chuncheon, Korea
6. Departments of Neurology, Inje University College of Medicine, Haeundae Paik Hospital, Busan, Korea
7. Department of Neurology, Gyeongsang National University School of Medicine and Gyeongsang National University Changwon Hospital, Changwon, Korea
8. Department of Neurology, Myoungji Hospital, Hanyang University, Goyangsi, Korea
9. Internal Medicine - Gerontology and Geriatric Medicine, Wake Forest School of Medicine, Winston-Salem, NC, USA
10. Pharmaceutical Diagnostics, GE Healthcare, Chalfont St Giles, UK
11. Stem Cell & Regenerative Medicine Institute, Samsung Medical Center, Seoul, Korea
12. Department of Nuclear Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
13. Department of Clinical Research Design & Evaluation, SAIHST, Sungkyunkwan University, Seoul, Korea
14. Samsung Alzheimer Research Center, Samsung Medical Center, Seoul, Korea
15. Center for Clinical Epidemiology, Samsung Medical Center, Seoul, Korea