[1] Royal Melbourne Hosp, Dept Palliat Care, Parkville, Vic 3050, Australia
[2] Royal Melbourne Hosp, Dept Med Oncol, Parkville, Vic 3050, Australia
[3] Peter MacCallum Canc Ctr, Deptment Med Oncol, East Melbourne, Vic, Australia
[4] Peter MacCallum Canc Ctr, Dept Pain & Palliat Care, East Melbourne, Vic, Australia
[5] Western & Cent Melbourne Integrated Canc Serv, East Melbourne, Vic, Australia
[6] St Vincents Hosp Melbourne, Dept Resp Med, Fitzroy, Vic, Australia
[7] St Vincents Hosp Melbourne, Palliat Care Serv, Fitzroy, Vic, Australia