1. Vanderbilt Biophotonics Center, Vanderbilt University, Nashville, Tennessee, USA.
2. Department of Biomedical Engineering, Vanderbilt University, Nashville, Tennessee, USA.
3. Division of Surgical Oncology and Endocrine Surgery, Vanderbilt University Medical Center, Nashville, Tennessee, USA.
4. Department of Otolaryngology—Head & Neck Surgery, Vanderbilt University Medical Center, Nashville, Tennessee, USA.