title: Does the incidence of IBD increase when persons move from a low- to a high-risk area?
authors.affiliation: Division of Gastroenterology, Zeidler Ledcor Centre, University of Alberta, Alberta, Canada.
authors.forename: C N
authors.initials: CN
authors.lastname: Williams
mesh_terms: D003710:Demography; D004641:Emigration and Immigration / Q000706:statistics & numerical data*; D004777:Environment; D005006:Ethnicity / Q000235:genetics* / Q000706:statistics & numerical data; D020022:Genetic Predisposition to Disease; D006801:Humans; D006920:Hygiene; D015994:Incidence; D015212:Inflammatory Bowel Diseases / Q000453:epidemiology* / Q000235:genetics / Q000276:immunology / Q000382:microbiology; D007422:Intestines / Q000382:microbiology*; D011159:Population Surveillance