[1] Lund Univ, Inst Clin Sci, Dept Resp Med & Allergol, Lund, Sweden
[2] Univ Technol Sydney, Fac Hlth, IMPACCT, Ultimo, NSW, Australia
[3] Univ Hull, Wolfson Palliat Care Res Ctr, Hull York Med Sch, Kingston Upon Hull, N Humberside, England
[4] Oxford Univ Hosp NHS Fdn Trust, Sobell House Hosp, Oxford, England
[5] Flinders Univ S Australia, Sch Psychol, Adelaide, SA, Australia
[6] Flinders Univ S Australia, Ctr Ageing Studies, Adelaide, SA, Australia
[7] Univ Hull, Hull York Med Sch, Inst Clin & Appl Hlth Res, Kingston Upon Hull, N Humberside, England
[8] Flinders Univ S Australia, Discipline Palliat & Support Serv, Adelaide, SA, Australia