Yuen H Y, Kew J, Metreweli C
Department of Diagnostic Radiology and Organ Imaging, Prince of Wales Hospital, Chinese University of Hong Kong, Shatin, New Territories, Hong Kong.
Australas Radiol. 1998 Nov;42(4):395-6. doi: 10.1111/j.1440-1673.1998.tb00549.x.