1. Section of Endocrine Surgery, Department of Surgery, Yale University School of Medicine, New Haven, Connecticut.
2. Current address: Department of Surgery, Medical College of Wisconsin, Milwaukee, Wisconsin.
3. Department of Pathology, Yale University School of Medicine, New Haven, Connecticut.
4. Current address: Department of Laboratory Medicine and Pathology, Mayo Clinic Scottsdale, Scottsdale, Arizona.
5. Yale University School of Medicine, New Haven, Connecticut.
6. Sections of Endocrine and Oncologic Surgery, Department of Surgery, Yale University School of Medicine, New Haven, Connecticut.