1. Dental ServiceMemorial Sloan Kettering Cancer Center New York New York
2. Epidemiology & BiostatisticsMemorial Sloan Kettering Cancer Center New York New York
3. Head and Neck Service, Department of SurgeryMemorial Sloan Kettering Cancer Center New York New York
4. Plastic and Reconstructive Service, Department of SurgeryMemorial Sloan Kettering Cancer Center New York New York
5. Memorial Sloan Kettering Cancer Center, and Weil Cornell Medical College New York
6. Department of Oncology and Reconstructive Surgery, I.M. Sechenov First Moscow State Medical University Moscow