1. Department of Surgery, Head and Neck ServiceMemorial Sloan Kettering Cancer CenterNew York New York
2. Department of Surgery, Dental ServiceMemorial Sloan Kettering Cancer CenterNew York New York
3. Department of PathologyMemorial Sloan Kettering Cancer CenterNew York New York
4. Department of Oncology, Radiotherapy and Plastic SurgerySechenov UniversityMoscow Russia