1. From the Department of Pathology, Radboud University Medical Center, Nijmegen, the Netherlands (Dr Slootweg); Head and Neck Pathology, King's College London, United Kingdom (Dr Odell); Institute of Pathology, University Hospital Basel, Basel, Switzerland (Dr Baumhoer); Centro Clínico de Cabeza y Cuello, Pathology Division, Guatemala City, Guatemala (Dr Carlos); Oral and Maxillofacial Medicine, Su