1. University of Arkansas for Medical Sciences Thyroid Center, Little Rock, Arkansas, USA
2. Department of Biostatistics, University of Arkansas for Medical Sciences, Little Rock, Arkansas, USA
3. Department of Otolaryngology–Head and Neck Surgery, University of Mississippi Medical Center, Jackson, Mississippi, USA
4. University Health System Consortium, Oakbrook, Illinois, USA
5. Department of Otolaryngology–Head and Neck Surgery, University of Arkansas for Medical Sciences, Little Rock, Arkansas, USA
6. Department of Geriatrics, University of Arkansas for Medical Sciences, Little Rock, Arkansas, USA