{Reference Type}: Letter {Title}: Nerve ultrasonography features in hereditary transthyretin amyloidosis with V30M mutation and polyneuropathy. {Author}: Salvalaggio A;Coraci D;Cacciavillani M;Padua L;Briani C; {Journal}: Neurol Sci {Volume}: 42 {Issue}: 6 {Year}: 06 2021 {Factor}: 3.83 {DOI}: 10.1007/s10072-020-05033-w {Abstract}: