1. Cancer and Cell Biology Division, Translational Genomics Research Institute, Phoenix, Arizona 85004, United States
2. Integrated Mass Spectrometry Shared Resource, City of Hope Comprehensive Cancer Center, Duarte, California 91010, United States
3. Tumor Initiation and Maintenance Program, NCI-Designated Cancer Center, Sanford Burnham Prebys Medical Discovery Institute, La Jolla, California 92037, United States
4. Department of Medicine, University of California San Diego, La Jolla, California 92093, United States
5. Moores Cancer Center, University of California San Diego, La Jolla, California 92093, United States