PPIB and fibrosis: After a 3-week Run-in phase during which dietary intake was assessed, 48 patients (CAP >280 dB, no fibrosis) were assigned to oat bran (4.5 g oat β-glucan, total fiber 11.7 g/day), spelt bran (11.7 g fiber/day), or placebo (2.1 g fiber/day) for 12 weeks.