[1] Univ Lancaster, Fac Hlth & Med, Div Hlth Res, Hlth Innovat One, Sir John Fisher Dr, Lancaster LA1 4YW, England
[2] Univ Lancaster, Fac Hlth & Med, Ctr Ageing Res, Div Hlth Res, Lancaster, England
[3] Natl Cheng Kung Univ, Natl Cheng Kung Univ Hosp, Coll Med, Dept Oncol, Tainan, Taiwan
[4] Natl Cheng Kung Univ, Natl Cheng Kung Univ Hosp, Coll Med, Ctr Hosp Palliat Shared Care, Tainan, Taiwan
[5] Univ Lancaster, Div Hlth Res, Int Observ End Life Care, Lancaster, England