1. University College London Marie Curie Palliative Care Research Department, Division of Psychiatry, , 6th Floor, Maple House, 149 Tottenham Court Road, London, W1T 7NF , UK
2. Gatehouse Charity , Dettigen Way, Bury St Edmunds, IP33 3TU , UK
3. The Open University , Walton Hall, Kents Hill, Milton Keynes, MK7 6AA , UK