1. Oncology R&D, AstraZeneca, Cambridge CB4 0WG, U.K.
2. Department of Chemistry, University of Cambridge, Cambridge CB2 1EW, U.K.
3. Discovery Sciences, R&D BioPharmaceuticals, AstraZeneca, Cambridge CB4 0WG, U.K.
4. Oncology R&D, AstraZeneca, Waltham, Massachusetts 02451, United States
5. Cambridge Centre for Proteomics, Department of Biochemistry, University of Cambridge, Cambridge CB2 1QW, U.K.
6. Instituto de Medicina Molecular, Faculdade de Medicina de Universidad de Lisboa, Avenida Prof. Egas Moniz, 1649-028 Lisboa, Portugal
7. Northern Institute for Cancer Research, Chemistry, School of Natural and Environmental Sciences, Newcastle University, Bedson Building, Newcastle upon Tyne NE1 7RU, U.K.