Ultrasound assisted versus landmark based intrathecal administration of nusinersen in adults with spinal muscular atrophy disease: A randomized trial. - Zanfini BA; Catarci S; Patanella AK; Vassalli F; Frassanito L; Pane M; Biancone M; Di Muro M; Rizzi E; Mercuri EM; Sabatelli M; Draisci G (Muscle & nerve, 2024)