Department of Gast-roenterology and Hepatology;
Hospital of Southwest Jutland;
Department of Medical Gastroenterology S;
Odense University Hospital;
Center for Clinical Epidemiology;
Odense Uni-versity Hospital;
Immune mediated diseases; Ulcerative colitis; Risk; Prevalence; Registry; Chronic inflammatory diseases; Autoimmune diseases; Inflammatory bowel disease; Crohn’s disease; extraintestinal manifestations;