1. Electrical Engineering Department, University of California, Los Angeles, Los Angeles, CA 90095, USA.
2. Bioengineering Department, University of California, Los Angeles, Los Angeles, CA 90095, USA.
3. California NanoSystems Institute, University of California, Los Angeles, Los Angeles, CA 90095, USA.
4. Division of Dermatology, Department of Medicine, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA 90095 USA.
5. Computer Science Department, University of California, Los Angeles, Los Angeles, CA 90095, USA.
6. Jonsson Comprehensive Cancer Center, University of California, Los Angeles, Los Angeles, CA 90095, USA.
7. Department of Surgery, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA 90095, USA.