), 66.7% (6/9) and 66.7% (6/9), respectively [8, 19, 23, 30, 32, 33, 43, 44]. The median of time to nadir was calculated in 40 patients with available data and resulted 4 days (IQR 3–9) (Table 1).

Results of electrophysiological, CSF, biochemical, and neuroimaging investigations
Detailed electroneurography results were reported in 84.9% (62/73) of the cases. Specifically, 77.4% (48/62) cases showed a pattern compatible with a demyelinating polyradiculoneuropathy