IL10 and Guillain-Barre syndrome: Serum expression of IL‐10 was elevated in GBS patients ([GBS, 12.16 ± 45.71] vs. [HC, 0.65 ± 5.17] pg/mL; p = 0.0027) and varied with disease severity ([severe‐GBS, 15.25 ± 51.72] vs. [mild‐GBS, 3.59 ± 19.79] pg/mL, p = 0.046).