Ultrasonography scoring systems can rule out malignancy in cytologically indeterminate thyroid nodules - Grani, G; Lamartina, L; Ascoli, V; Bosco, D; Nardi, F; D'Ambrosio, F; Rubini, A; Giacomelli, L; Biffoni, M; Filetti, S; Durante, C; Cantisani, V (Endocrine, 2017)