Elizabeth Philipone, DMD is Associate Professor of Dental Medicine (in Pathology and Cell Biology) at the Columbia University Medical Center, New York; Attending at the Columbia University Irving Medical Center; and Associate Director of the Columbia Oral Diagnostic Biopsy Service. She is also the director of the Oral and Maxillofacial Pathology Division at Columbia University College of Dental Medicine & Columbia University Irving Medical Center as well as the Oral and Maxillofacial Pathology Residency Director, New York Presbyterian Hospital/Columbia University Irving Medical Center. She is a Diplomate of the American Board of Oral and Maxillofacial Pathology and a Fellow of the American Academy of Oral and Maxillofacial Pathology. Dr. Philipone has extensive clinical experience in oral and maxillofacial pathology. She has also conducted research in the field and has published numerous articles in peer-reviewed medical and dental journals. Angela J. Yoon,DDS, MPH, MAMSc is Professor and Director of Oral and Maxillofacial Pathology at the James B. Edwards College of Dental Medicine, Medical University of South Carolina (MUSC), Charleston, SC; Attending at the Medical University of Medical Center; and Director of the MUSC Oral Biopsy Service. She also has her secondary appointment in Department of Otolaryngology – Head and Neck Surgery at MUSC . Dr. Yoon gained her DDS from Columbia University, School of Dental and Oral Surgery in 2003. She is board certified by the American Board of Oral and Maxillofacial Pathology. Dr. Yoon has served as a peer reviewer of original articles and case reports for a number of leading journals. She is the author of over 70 original articles, case reports, and book chapters. Ioannis (John) G. Koutlas, DDS, MS is an Associate Professor and Director of the Oral Pathology Laboratory in the Department of Diagnostic and Biological Sciences at the School of Dentistry, University of Minnesota. He is a fellow of the American Academy of Oral and Maxillofacial Pathology, member of the British Society of Oral and Maxillofacial Pathology and the North American Society of Head and Neck Pathology (Life member) and board certified by The American Board of Oral and Maxillofacial Pathology. He is also Regional Laboratory Inspector of the College of American Pathologists. His research focuses on syndromes of the head and neck, and molecular signatures of tumors of the head and neck. He is an experienced author with over 100 published papers and book chapters and he is a frequent presenter at national and international specialty meetings.