1. Raffles Neuroscience Centre, Raffles Hospital, Singapore
2. Department of Neurology, National Neuroscience Institute — Singapore General Hospital Campus, Singapore
3. Division of Neurology, National University Hospital, Singapore
4. Department of Rehabilitation Medicine, Changi General Hospital, Singapore
5. Department of Rehabilitation Medicine, Tan Tock Seng Hospital, Singapore
6. Tang Neurology and Medical Clinic, Mt Elizabeth Hospital, Singapore
7. Department of Geriatric Medicine, Khoo Teck Puat Hospital, Singapore
8. Department of Medicine, Alexandra Hospital, Singapore
9. National Registry of Disease Office, Health Promotion Board, Singapore