1. Herbert Irving Comprehensive Cancer Center, Columbia University Medical Center, New York, NY, USA
2. Department of Otolaryngology, Hospital Universitario Central de Asturias and Instituto Universitario de Oncología del Principado de Asturias, Universidad de Oviedo, Oviedo, Spain
3. Department of Molecular Oncology, Hospital Universitario Central de Asturias and Instituto Universitario de Oncología del Principado de Asturias, Universidad de Oviedo, Oviedo, Spain
4. Department of Pathology, Hospital Universitario Central de Asturias and Instituto Universitario de Oncología del Principado de Asturias, Oviedo, Spain
5. Biostatistics Unit, Hospital Universitario Central de Asturias, Oviedo, Spain
6. Department of Pathology, Columbia University Medical Center, New York, NY, USA
7. Departments of Otolaryngology/Head and Neck Surgery, Columbia University Medical Center, New York, NY, USA