1 Walter C. Guralnick Distinguished Professor and Chief Emeritus, Department of Oral and Maxillofacial Surgery Massachusetts General Hospital, Boston, MA.
2 Professor Emeritus, Plastic and Reconstructive Surgery and Pediatrics, Georgetown University School of Medicine, Washington, DC; Professor of Orthodontics, University of Maryland College of Dental Surgery, Baltimore, MD; Professor of Oral and Maxillofacial Surgery, Howard University College of Dentistry, Washington, DC; Adjunct Professor of Plastic and Reconstructive Surgery, Johns Hopkins School of Medicine, Baltimore, MD. Electronic address: drposnick@gmail.com.