1. Department of Endocrine Neoplasia and Hormonal Disorders, The University of Texas MD Anderson Cancer Center, Houston, Texas.
2. Department of Otolaryngology and Division of Endocrinology, Department of Medicine, Augusta University, Augusta, Georgia.
3. Endocrinology Service, Department of Medicine, Memorial Sloan-Kettering Cancer Center and Weill-Cornell College of Medicine, New York, New York.