[1] Townsville Univ Hosp, 100 Angus Smith Dr, Douglas, Qld 4814, Australia
[2] James Cook Univ, Townsville, Qld, Australia
[3] Peter MacCallum Canc Ctr, Dept Canc Imaging, Melbourne, Vic, Australia
[4] Univ Melbourne, Sir Peter MacCallum Dept Oncol, Melbourne, Vic, Australia