1. Department of Geriatrics, University of Medicine and Pharmacy at Ho Chi Minh City, Ho Chi Minh City, Vietnam
2. Department of Geriatrics and Palliative Care, University of Medicine and Pharmacy at Ho Chi Minh City, Ho Chi Minh City, Vietnam
3. Department of Geriatrics, Gia Dinh People's Hospital, Ho Chi Minh City, Vietnam
4. Department of Rheumatology, Ho Chi Minh City University Medical Center, Ho Chi Minh City, Vietnam
5. Department of Health Services Research, Peter MacCallum Cancer Centre, Melbourne, Australia
6. Sir Peter MacCallum Department on Oncology, Faculty of Medicine, Dentistry and Health Sciences, The University of Melbourne, Melbourne, Australia
7. Department of Psychology and Iverson Health Innovation Research Institute, Swinburne University, Melbourne, Australia
8. Social Gerontology Division, National Ageing Research Institute, Melbourne, Australia
9. UniSA Clinical and Health Sciences, University of South Australia, Adelaide, Australia
10. Health Strategy and Policy Institute, Ministry of Health, Hanoi, Vietnam