1. From the University Clinic Freiburg, Germany; Institut Sainte Catherine Service de Radiothérapie, Avignon; and Centre Règional de Lutte Contre le Cancer Nantes-Atlantiques, Nantes, France; San Paolo Hospital and University of Milan, Milan, Italy; Vall d'Hebron University Hospital, Barcelona; and Hospital Universitario de la Princesa, Madrid, Spain; Ear, Nose, and Throat University Hospital Graz, Medical University Graz, Austria; Amgen, Thousand Oaks, CA; and Amgen, Cambridge, United Kingdom.