1 Department of Geriatric Medicine, Tan Tock Seng Hospital, Singapore; Institute of Geriatrics and Active Ageing (IGA), Tan Tock Seng Hospital, Singapore. Electronic address: edward_chong@ttsh.com.sg.
2 Emergency Department, Tan Tock Seng Hospital, Singapore.
3 Department of Geriatric Medicine, Tan Tock Seng Hospital, Singapore; Institute of Geriatrics and Active Ageing (IGA), Tan Tock Seng Hospital, Singapore.
4 Division for Central Health (DCH), Tan Tock Seng Hospital, Singapore.