1. Department of Bioengineering, University of California, Los Angeles, Los Angeles, California 90095, United States
2. Department of Molecular and Medical Pharmacology, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, California 90095, United States
3. Crump Institute for Molecular Imaging, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, California 90095, United States
4. Jonsson Comprehensive Cancer Center, University of California, Los Angeles, Los Angeles, California 90095, United States