1. Ear, Nose, and Throat Department; NHS Lothian; Edinburgh UK
2. Department of Surgery and MacLean Center for Clinical Ethics; The University of Chicago Medicine; Chicago Illinois
3. Head and Neck Service; Memorial Sloan Kettering Cancer Center; New York New York
4. University of Udine School of Medicine; Udine Italy
5. Department of Pathology, Division of Pathology/Laboratory Medicine; The University of Texas MD Anderson Cancer Center; Houston Texas
6. Coordinator of The International Head and Neck Scientific Group