1 Department of Vascular and Interventional Radiology, Singapore General Hospital, SingHealth Duke-NUS Academic Medical Centre, 20 College Road, Academia Level 4, 169856, Singapore, Singapore. tan.bien.soo@singhealth.com.sg.
2 Department of Vascular and Interventional Radiology, Singapore General Hospital, SingHealth Duke-NUS Academic Medical Centre, 20 College Road, Academia Level 4, 169856, Singapore, Singapore.