1. Drug Discovery, Bayer Pharma AG, Berlin, Germany
2. Center for the Science of Therapeutics, Broad Institute, Cambridge, MA, USA
3. Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, MA, USA
4. Department of Medicine, Harvard Medical School, Boston, MA, USA
5. Present address: Novartis Institute for BioMedical Research, Cambridge, MA, USA