[1] Betsi Cadwaladr Univ Hlth Board, Dept Palliat Med, Caernarfan, England
[2] Cardiff Univ, Dept Palliat Med, Newport, Shrops, England
[3] Velindre Hosp, Dept Palliat Care, Cardiff, Wales
[4] Wales Canc Trials Unit, Marie Curie Canc Care, Cardiff, Wales
[5] Cardiff Univ, Royal Gwent Hosp, Palliat Med, Cardiff Rd, Newport NP202UB, Shrops, England