1. From the Department of Otolaryngology. University of Miami School of Medicine, The University of Texas System Cancer Center, M. D. Anderson Hospital and Tumor Institute.
2. From the Department of Head and Neck Surgery, The University of Texas System Cancer Center, M. D. Anderson Hospital and Tumor Institute.
3. From the Department of Pathology, The University of Texas System Cancer Center, M. D. Anderson Hospital and Tumor Institute.