The burden of upper motor neuron involvement is correlated with the bilateral limb involvement interval in patients with amyotrophic lateral sclerosis: a retrospective observational study

Jieying Wu , Shan Ye , Xiangyi Liu , Yingsheng Xu , Dongsheng Fan

Neural Regeneration Research . 2025, (5): 1505 -1512 . DOI: 10.4103/NRR.NRR-D-23-01359