Sankey diagrams showing the development of disease location (A) and behavior (B) between diagnosis and 1-year follow-up for the patients in the cohort with CT/MRI/capsule endoscopy or colonoscopy (n = 314), following the Montreal classification for disease location (L1: Ileal, L2: Colonic, L3: Ileocolonic, L4: Upper GI) and disease behavior (B1: Non-stricturing, non-penetrating, B2: Stricturing, B3: Penetrating, B4: Perianal).