title: Introduction: Inflammatory bowel disease: a complex systemic disease engaging multiple players outside the immune system.
authors.affiliation: Division of Molecular Pathology, Karolinska Institutet, Stockholm, Sweden. sven.pettersson@ki.se
authors.forename: S
authors.initials: S
authors.lastname: Pettersson
mesh_terms: D020022:Genetic Predisposition to Disease; D006801:Humans; D015212:Inflammatory Bowel Diseases / Q000209:etiology* / Q000276:immunology / Q000503:physiopathology; D015398:Signal Transduction