1. Department of Oncology and Metabolism, University of Sheffield, Sheffield, South Yorkshire, UK
2. Oncology iMED, AstraZeneca Pharmaceuticals, Alderley Park, Cheshire, UK
3. Department of Internal Medicine and Huntsman Cancer Institute, University of Utah, Salt Lake City, Utah, USA
4. Oncology iMED, AstraZeneca Pharmaceuticals, Gatehouse Park, Massachusetts, USA