Sonographic Risk Stratification Systems for Thyroid Nodules as Rule-Out Tests in Older Adults. - Grani, Giorgio; Brenta, Gabriela; Trimboli, Pierpaolo; Falcone, Rosa; Ramundo, Valeria; Maranghi, Marianna; Lucia, Piernatale; Filetti, Sebastiano; Durante, Cosimo (Cancers, 2020)