1. Department of Electrical Engineering, University of California, Los Angeles, California 90095, USA
2. Center for Advanced Surgical and Interventional Technology, CASIT, Los Angeles, California 90095, USA
3. Department of Bioengineering, University of California, Los Angeles, California 90095, USA
4. Department of Head and Neck Surgery, David Geffen School of Medicine, Los Angeles, California 90095, USA