1. Department of Medicinal Chemistry, University of Michigan, Ann Arbor, Michigan 48109, United States
2. Whitehead Institute for Biomedical Research, 455 Main Street, Cambridge, Massachusetts 02142, United States
3. Department of Biology, Massachusetts Institute of Technology, Cambridge, Massachusetts 02142, United States
4. Bioinformatics Group, Wageningen University, Wageningen 6700AP, The Netherlands
5. Department of Internal Medicine, University of Michigan, Ann Arbor, Michigan 48109, United States