Clinical features and outcomes of the flail arm and flail leg and pure lower motor neuron MND variants: a multicentre Italian study. Issue 9 (10th July 2020) - Schito, Paride; Ceccardi, Giulia; Calvo, Andrea; Falzone, Yuri Matteo; Moglia, Cristina; Lunetta, Christian; Marinou, Kalliopi; Ticozzi, Nicola; Scialo, Carlo; Sorarù, Gianni; Trojsi, Francesca; Conte, Amelia; et al.