1 Department of Diagnostic Imaging, National University Health System, 1E Kent Ridge Rd, 119074, Singapore.
2 Yong Loo Lin School of Medicine, National University of Singapore, Block MD11, 10 Medical Drive, 117597, Singapore.
3 Department of Radiology, University of California, San Diego School of Medicine, San Diego, California
Corresponding author: James Hallinan, Tel: (65) 6779 5555 Fax: (65) 6779 5678, Department of Diagnostic Imaging, National University Health System, 5 Lower Kent Ridge Rd, 119074, Singapore. Email:firstname.lastname@example.org
Funding: No funding was received for this study.
Conflicts of interest statement: None of the authors have conflicts of interest to declare.