1. Division of Geriatric Medicine; Department of Medicine; Faculty of Medicine; University of Malaya; Kuala Lumpur Malaysia
2. Ageing and Age-Associated Disorders Research Group; Department of Medicine; Faculty of Medicine; University of Malaya; Kuala Lumpur Malaysia
3. Division of Gastroenterology; Department of Medicine; Faculty of Medicine; University of Malaya; Kuala Lumpur Maylasia