[1] Alfred Hlth, Dept Radiol, Melbourne, Vic, Australia
[2] Monash Univ, Dept Surg, Melbourne, Vic, Australia
[3] Monash Univ, Natl Trauma Res Inst, Cent Clin Sch, Melbourne, Vic, Australia
[4] Dunedin Publ Hosp, Radiol Dept, Dunedin, New Zealand
[5] KK Womens & Childrens Hosp, Dept Diagnost & Intervent Imaging, Singapore City, Singapore
[6] Alfred Hlth, Dept Radiol, 55 Commercial Rd, Melbourne, Vic 3004, Australia