1. Division of Head and Neck Surgery, Department of Otolaryngology, University of Pittsburgh Cancer Institute, Pittsburgh, Pennsylvania.
2. Department of Pathology, University of Pennsylvania Medical Center, Philadelphia, Pennsylvania.
3. Department of Endocrinology, Mayo Clinic, Jacksonville, Florida.
4. Department of Otolaryngology/Head and Neck Surgery, Emory University, Atlanta, Georgia.
5. Department of Surgery, New York Presbyterian Hospital, New York, New York.
6. Head and Neck Service, Memorial Sloan-Kettering Cancer Center, New York, New York.
7. Division of Endocrinology, New York University Medical Center, New York, New York.
8. Endocrine Oncology Branch, Center for Cancer Research, National Cancer Institute, Bethesda, Maryland.
9. Division of Endocrine Surgery, New York University Medical Center, New York, New York.
10. Department of Otolaryngology/Head and Neck Surgery, University of Cincinnati Medical Center, Cincinnati, Ohio.
11. Department of Otolaryngology/Head and Neck Surgery, Johns Hopkins University, Baltimore, Maryland.
12. Department of Surgery, Division of General Surgery, St. Paul's Hospital and University of British Columbia, Vancouver, Canada.
13. Division of Endocrine Surgery, Department of Surgery, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania.