1. UAMS Thyroid Center, Winthrop P. Rockefeller Cancer Institute, University of Arkansas for Medical Sciences, Little Rock, Arkansas.
2. Department of Otolaryngology—Head and Neck Surgery, University of Arkansas for Medical Sciences, Little Rock, Arkansas.
3. Department of Geriatrics, University of Arkansas for Medical Sciences, Little Rock, Arkansas.
4. College of Medicine, University of Arkansas for Medical Sciences, Little Rock, Arkansas.
5. Department of Pathology, University of Arkansas for Medical Sciences, Little Rock, Arkansas.