title: Is the incidence of inflammatory bowel disease in the developed countries increasing again? Is that surprising?
authors.forename: Xiaofa
authors.initials: X
authors.lastname: Qin
mesh_terms: D019049:Developed Countries; D006801:Humans; D015994:Incidence; D015212:Inflammatory Bowel Diseases / Q000453:epidemiology*; D012189:Retrospective Studies; D012307:Risk Factors