1. Division of Geriatric Medicine, Department of Medicine, Faculty of Medicine, Universiti Malaya, Kuala Lumpur 50603, Malaysia
2. Ageing and Age-Associated Disorders Research Group, Health and Wellbeing Research Cluster, Universiti Malaya, Kuala Lumpur 50603, Malaysia
3. Department of Healthcare and Medical Sciences, Faculty of Health Sciences, Sunway University, Bandar Sunway, Malaysia