1. Macmillan Unit, Antrim, Northern Ireland, United Kingdom.
2. Department of Palliative Medicine, Altnagelvin Hospital and Foyle Hospice, Derry, Northern Ireland, United Kingdom.
3. Northern Ireland Hospice, Belfast, Northern Ireland, United Kingdom.
4. University of Ulster, Northern Ireland, United Kingdom.
5. Mater Hospital, Belfast, Northern Ireland, United Kingdom.