Ait-Belgnaoui A, Payard I, Rolland C, Harkat C, Braniste V, Théodorou V, Tompkins TA. Bifidobacterium longum and Lactobacillus helveticus Synergistically Suppress Stress-related Visceral Hypersensitivity Through HPA Axis Modulation. J Neurogastroenterol Motil. 2018 Jan 30;24(1):138-146.