By James I. Cohen, MD, PhD, FACS, Professor, Department of Otolaryngology/Head and Neck Surgery; Chief Otolaryngology/Assistant Chief Surgery, Portland VA Medical Center, Oregon Health Sciences University, Portland, Oregon; Gary L. Clayman, DMD, MD, FACS, Alando J. Ballantyne Distinguished Chair of Head & Neck Surgery; Professor of Surgery and Cancer Biology, Department of Head and Neck Surgery; Chief, Section of Head & Neck Endocrine Surgery and Deputy Head Division of Surgery, University of Texas MD Anderson Cancer Center, Houston, Texas