[1] Univ Hull, Hull York Med Sch, Dept Palliat Med, Kingston Upon Hull HU6 7RX, N Humberside, England
[2] Barnsley Hospice, Dept Palliat Med, Barnsley, S Yorkshire, England
[3] South West Yorkshire Partnership Fdn Trust, End Iife Care Clin Iead, Barnsley, England
[4] Marie Curie Canc Care, Dept Serv Dev, Leeds, W Yorkshire, England
[5] Barnsley Hosp NHS Fdn Trust, Dept Resp Med, Barnsley, S Yorkshire, England