[1] Curtin Univ, WA Ctr Canc & Palliat Care, Curtin Hlth Innovat Res Inst, Perth, WA 6845, Australia
[2] Monash Univ, Dept Gen Practice, Melbourne, Vic 3004, Australia
[3] Calvary Mater Newcastles Dept Radiat Oncol, Newcastle, NSW, Australia
[4] Sir Charles Gairdner Hosp, Dept Radiat Oncol, Perth, WA, Australia
[5] Canc Council Queensland, Viertel Ctr Res Canc Control, Brisbane, Qld, Australia