[1] Univ Technol Sydney, Fac Hlth, IMPACCT Improving Palliat Aged & Chron Care Clin, Bldg 10,Level 3,235 Jones St, Sydney, NSW 2007, Australia
[2] Westmead Hosp, Dept Resp & Sleep Med, Sydney, NSW, Australia
[3] Westmead Inst Med Res, Ludwig Engel Ctr Resp Res, Sydney, NSW, Australia
[4] Univ Sydney, Westmead Hosp, Sydney, NSW, Australia
[5] Prince Wales Hosp, Resp Med Clin, Sydney, NSW, Australia
[6] Univ Hull, Wolfson Palliative Care Res Ctr, Hull York Med Sch, Kingston Upon Hull, Yorks, England
[7] Western Sydney Univ, Blacktown Hosp, Western Sydney Nursing & Midwifery Res Ctr, Blacktown Clin & Res Sch,Western Sydney Local Hlt, Sydney, NSW, Australia
[8] Queensland Univ Technol, Sch Nursing, Brisbane, Qld, Australia