1 Emergency Medicine Department, National University Hospital, National University Health System, 9 Lower Kent Ridge Road, Singapore, 119085, Singapore. [email protected].
2 Urgent Care Centre, Alexandra Hospital, National University Health System, Singapore, Singapore. [email protected].
3 Emergency Medicine Department, National University Hospital, National University Health System, 9 Lower Kent Ridge Road, Singapore, 119085, Singapore.
4 Urgent Care Centre, Alexandra Hospital, National University Health System, Singapore, Singapore.
5 Department of Surgery, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore.