1. Inflammation, Repair and Development, National Heart and Lung Institute, Imperial College London, London, UK.
2. Clinical Research Division, Fred Hutchinson Cancer Research Center, Seattle, WA 98109, USA.
3. Cancer Research UK Beatson Institute, Garscube Estate, Bearsden, Glasgow, UK.
4. Department of Pathology, University of California, San Francisco, 513 Parnassus Ave., San Francisco, CA, USA.
5. Institute of Cancer Sciences, University of Glasgow, Glasgow, UK.