[1] Mater Adult Hosp, Mater Hlth Serv, Dept Palliat Care, Brisbane, Qld 4101, Australia
[2] Ctr Palliat Care Res & Educ, Brisbane, Qld, Australia
[3] Mater Hlth Serv, Mater Res Support Ctr, Brisbane, Qld, Australia
[4] Queensland Univ Technol, Brisbane, Qld 4001, Australia