1. Department of Biochemistry and Molecular Medicine, University of Southern California, Keck School of Medicine, Los Angeles, CA 90033
2. Norris Comprehensive Cancer Center, Keck School of Medicine, University of Southern California, Los Angeles, CA 90033
3. Department of Molecular Medicine, Scripps Research, La Jolla, CA 92037
4. Department of System Biology, Beckman Research Institute, City of Hope, Duarte, CA 91010