1. Department of Geriatrics, Hanoi Medical University, Hanoi 100000, Vietnam
2. National Geriatric Hospital, Hanoi 100000, Vietnam
3. Institute for Preventive Medicine and Public Health, Hanoi Medical University, Hanoi 100000, Vietnam
4. Department of Population and Quantitative Health Sciences, University of Massachusetts Medical School, Worcester, MA 01655, USA
5. Department of Geriatric Medicine, Centre for Education and Research on Ageing (CERA), Concord Hospital, Sydney, NSW 2139, Australia
6. Faculty of Medicine and Health, University of Sydney, Sydney, NSW 2006, Australia
7. Neurology Department, Hanoi Medical University, Hanoi 100000, Vietnam