1. Division of Hematology/Oncology, Melvin and Bren Simon Cancer Center, Indiana University School of Medicine, Indianapolis, IN, USA
2. Departments of Pharmacology and Toxicology and Epidemiology, Geisel School of Medicine at Dartmouth, Hanover, NH, USA
3. Department of Pathology, Melvin and Bren Simon Cancer Center, Indiana University School of Medicine, Indianapolis, IN, USA
4. Astex Pharmaceutical, Pleasanton, CA, USA
5. Department of Comparative Biosciences, The University of Illinois at Urbana-Champaign, Urbana, IL, USA
6. Department of Epidemiology, Geisel School of Medicine at Dartmouth, Hanover, NH, USA