[1
]GRID grid.240988.f, Department of Palliative Medicine, , Tan Tock Seng Hospital, ; Singapore, Singapore
[2
]GRID grid.240988.f, Institute of Geriatrics and Active Ageing, , Tan Tock Seng Hospital, ; Singapore, Singapore
[3
]GRID grid.240988.f, Department of Geriatric Medicine, , Tan Tock Seng Hospital, ; Singapore, Singapore
[4
]Department of Geriatric Medicine, Woodlands Health Campus, Singapore, Singapore
[5
]GRID grid.240988.f, Tan Tock Seng Hospital, ; Annex 2 Level 3, 11 Jalan Tan Tock Seng, Novena, Singapore, 308433 Singapore