1 Department of Diagnostic Imaging, National University Health System, 1E Kent Ridge Road, Level 12, Singapore 119228, Singapore; King Abdullah Medical Complex Jeddah, P.O. Box 55659, Jeddah 21544, Saudi Arabia. Electronic address: [email protected].
2 Department of Diagnostic Imaging, National University Health System, 1E Kent Ridge Road, Level 12, Singapore 119228, Singapore; NUS Yong Loo Lin School of Medicine, NUHS Tower Block, 1E Kent Ridge Road, Level 11, Singapore 119228, Singapore.