Optical coherence tomography findings in multiple system atrophy: insights into disease diagnosis, clinical correlations, and dopaminergic degeneration. - Kang Y; Wang H; Chen X; Jin N; Chen M; Chen Y; Xu W; Dou X; Xie Z; Wang B; Luo W (Neurological sciences : official journal of the Italian Neurological Society and of the Italian Society of Clinical Neurophysiology, 2026)