title: Editorial: Ultra violet (UV) exposure and IBD--should more be done to demonstrate an association before trying to find its mechanism?
authors.affiliation: Division of Epidemiology and Public Health, Nottingham City Hospital, University of Nottingham, Nottinghamshire, UK. tim.card@nottingham.ac.uk.
authors.forename: T R
authors.initials: TR
authors.lastname: Card
mesh_terms: D003093:Colitis, Ulcerative / Q000453:epidemiology*; D003424:Crohn Disease / Q000453:epidemiology*; D005260:Female; D006760:Hospitalization / Q000706:statistics & numerical data*; D006801:Humans; D008297:Male; D014466:Ultraviolet Rays