[1] Prince Wales Hosp, Post Acute Care Serv, Sydney, NSW, Australia
[2] Univ New S Wales, Prince Wales Clin Sch, Sydney, NSW, Australia
[3] Queen Elizabeth Hosp, Adelaide, SA, Australia
[4] Christchurch Sch Med, Sch Publ Hlth & Gen Practice, Gen Practice Res Grp, Christchurch, New Zealand
[5] Univ Turin, San Giovanni Battista Hosp, Dept Med & Surg Disciplines, Turin, Italy
[6] Univ Leicester, Dept Hlth Sci, Leicester, Leics, England