1. Department of Head and Neck Surgery, UCLA Medical Center, Los Angeles, California
2. Department of Pathology and Laboratory Medicine, UCLA Medical Center, Los Angeles, California
3. UCLA Head and Neck Cancer Program, UCLA David Geffen School of Medicine, Los Angeles, California
4. Jonsson Comprehensive Cancer Center, UCLA David Geffen School of Medicine, Los Angeles, California
5. Section of Oral & Maxillofacial Surgery, UCLA School of Dentistry, Los Angeles, California