1. Endocrine Surgery, Department of Surgery, The Johns Hopkins University School of Medicine, Baltimore, Maryland.
2. Division of Head and Neck Endocrine Surgery, Department of Otolaryngology—Head and Neck Surgery, The Johns Hopkins University School of Medicine, Baltimore, Maryland.
3. Department of Oncology, The Johns Hopkins University School of Medicine, Baltimore, Maryland.
4. Department of Cellular and Molecular Medicine, The Johns Hopkins University School of Medicine, Baltimore, Maryland.