1 Department of Clinical Oncology, Mount Vernon Cancer Centre, Northwood, UK. Electronic address: [email protected].
2 Department of Radiotherapy Physics, Mount Vernon Cancer Centre, Northwood, UK.
3 Department of Clinical Oncology, Mount Vernon Cancer Centre, Northwood, UK.
4 Department of Acute Medicine, University Hospital Lewisham, London, UK.
5 Department of Clinical Oncology, St Bartholomew's Hospital, London, UK.
6 Division of Cancer Sciences, The University of Manchester, Manchester, UK; Sydney Medical School, The University of Sydney, Sydney, New South Wales, Australia.