1. Department of Otolaryngology, Thyroid Disease Center—Arcispedale Santa Maria Nuova of Reggio Emilia, Reggio Emilia, Italy.
2. Department of Endocrinology, Thyroid Disease Center—Arcispedale Santa Maria Nuova of Reggio Emilia, Reggio Emilia, Italy.
3. Department of Biostatistics, Thyroid Disease Center—Arcispedale Santa Maria Nuova of Reggio Emilia, Reggio Emilia, Italy.
4. Department of Pathology, Thyroid Disease Center—Arcispedale Santa Maria Nuova of Reggio Emilia, Reggio Emilia, Italy.