Tan Li Feng, Alicia Ang Xin Yu, Wei Chua Joo
Division of Healthy Ageing, Alexandra Hospital, 378 Alexandra Road, Singapore 159964.
Division of Infectious Diseases, National University Hospital, Lower Kent Ridge Road, Singapore S119074.
Lancet Reg Health West Pac. 2021 Jul;12:100192. doi: 10.1016/j.lanwpc.2021.100192. Epub 2021 Jul 13.