[1] Kings Coll London, London WC2R 2LS, England
[2] Kings Coll London, Cicely Saunders Inst, London WC2R 2LS, England
[3] Auckland Univ Technol, Auckland, New Zealand
[4] Kings Coll Hosp London, Dept Palliat Care, London, England
[5] Kings Coll Hosp London, Dept Haematol Med, London, England