1 Edinburgh Cancer Research Centre, University of Edinburgh, Edinburgh, UK.
2 Oncology, University Hospital of Herakleion, Herakleion, Crete, Greece.
3 European Palliative Care Research Centre, Norwegian University of Science and Technology, Trondheim, Norway.
4 European Palliative Care Research Centre, Norwegian University of Science and Technology, Trondheim, Norway; The Cancer Clinic, St. Olav's Hospital, Trondheim University Hospital, Trondheim, Norway.
5 Department of Surgical Sciences, University of Glasgow, Glasgow, UK.
6 Larisa General Clinic, Thessaly, Greece.
7 Edinburgh Cancer Research Centre, University of Edinburgh, Edinburgh, UK; European Palliative Care Research Centre, Norwegian University of Science and Technology, Trondheim, Norway. Electronic address: barry.laird@ed.ac.uk.